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2019 / 03 / 29
As we all known, in order to control air pollution and win the blue sky defense war, the [2+26" cities in Beijing, Tianjin, Hebei and the surrounding areas have comprehensively promoted the promotion of clean coal energy. The work of [dissolving coal loose" in the heating industry has been fruitful. Specifically, the heating area of Beijing in the heating season from 2017 to 2018 reached 840 million square meters, increased 30 million square meters compared with the previous year. Heating in the plain area has basically bid farewell to coal combustion, and the city's six districts have basically achieved centralized heating and cleaning. . In 2017, Beijing completed a total of 700 villages [coal to clean energy", 515 coal-to-electricity villages, 207,200 households, 185 coal-to-gas villages, and 94,700 households. It is estimated that by 2018, coal-to-gas (electricity) in rural areas of Beijing will be completed, and the proportion of clean heating during the [13th Five-Year Plan" period will reach over 95%. Despite the remarkable results, the demand in most domestic markets is still large. As a brand display and promotion platform for new technologies and new equipment for international air energy and clean heating, 2019 Beijing Boiler Show, Beijing HVAC Exhibition, Beijing Heating Exhibition Beijing Air Energy Exhibition and Beijing Clean Heating Exhibition (IBE) will be held in Beijing National Convention Center from July 24th to 26th. Through the layered stripping of the IBE Organizing Committee, excellent equipment, top products and well-known brands are just around the corner.
2019 / 03 / 28
Manufacturing is the foundation of the country. To achieve high-quality development, the Chinese economy must be supported by high-quality manufacturing. The Central Economic Work Conference listed "promoting high-quality development of manufacturing" as a key task for 2019. The government work report also emphasizes promoting high-quality development of manufacturing and accelerating the construction of manufacturing power. Through 40 years of Reform and Opening, Chinese economic increase rapidly. There are five supporting conditions for the high-quality development of China's manufacturing industry. First, the base of manufacturing is strong. The overall scale of China's manufacturing industry has ranked first in the world for many years, with more than 220 industrial products. China's manufacturing industry is completed in scope and system, which has all the industrial categories listed in the UN industry classification. At the same time, China also has a number of industrial finished products industry chain supporting the complete advantages, forming a group of competitive industrial clusters. Second, the ability of innovation is enhanced. In 2018, the total social R&D expenditure was about 1.94 trillion yuan, accounting for 2.15% of GDP; the national science center and national independent innovation demonstrations were established. District and other leading a number of high-level innovation platforms, set up a number of high-quality "double-creation" base, nurturing and strengthening a number of high-tech enterprises, China's manufacturing innovation capacity is constantly improving, is changing from "follow the runner" As a "runner", he even became a "leader" in some areas. Third, the market is huge. In 2018, the total retail sales of consumer goods in China exceeded 38 trillion yuan, and this market maintained rapid growth every year. At the same time, China's middle-income group has more than 400 million people, and its escalating mi
The 8th Shanghai International Bearing&Equipment Exhibition 2019
2019 / 03 / 27
"The 8th Shanghai International Bearing&Equipment Exhibition 2019" referred to as "IBE Shanghai 2019", the exhibition will be grandly opened at the Shanghai World Expo Exhibition Hall on May 6th to 8th, 2019. As a domestic and early-stage bearing and equipment industry event, this exhibition will cover a wide range of bearing products and special processing equipment, aiming to provide exhibitors with more market opportunities and exhibition services, which will be at a higher starting point. Exhibitors and spectators will provide a high quality industry event. According to statistics after the exhibition in 2018, the exhibition organized more than 600 exhibitors from nearly 20 countries and regions around the world, with a total exhibition area of 56,000 square meters. The three-day exhibition attracted 38,000 manufacturers and high-end buyers from many countries and regions at home and abroad. The industry covers automobile manufacturing, machinery and equipment, electronic equipment, hardware and electrical machinery, engineering machinery, aerospace, shipbuilding, track, transportation, medical equipment and other fields. The enthusiastic interaction between exhibitors and professional visitors at the exhibition further established the market leadership position of the exhibition as a brand event in Eastern China.
Hanover industrial expo will be held in Hanover, Germany on April 1, 2019 on solstice 5
2019 / 03 / 19
German industrial exhibition HANNOVER MESSE is not only a powerful industrial exhibition in the world, but also a high-tech exhibition. It is recognized as one of the important platforms connecting global industrial design, processing and manufacturing, technology application and international trade.
2019 / 03 / 06
The joint bearing is a kind of spherical sliding bearing, whose sliding contact surface is an inner sphere and an outer sphere, which can rotate and swing at any Angle when moving. Joint bearing has the characteristics of large load capacity, impact resistance, corrosion resistance, wear resistance, self-aligning and good lubrication. The structure of the joint bearing is simpler than that of the rolling bearing, which is mainly composed of an inner ring with an outer sphere and an outer ring with an inner sphere. Joint bearings are generally used for low speed swing motion (that is, angular motion), because the sliding surface is spherical, can also be in a certain Angle range for tilt motion (that is, adjustable movement), in the support shaft and shaft shell hole is not concentricity is large, still can work normally.
2019 / 03 / 01
The self-aligning roller bearing has double row rollers, one common spherical raceway in the outer ring and two raceways in the inner ring, which are inclined at an Angle to the bearing axis. This kind of ingenious construction enables it to have the self-centering performance, thus is not easy to be affected by the axis and the bearing housing Angle to the error or the axis bending, is suitable for the installation error or the axis deflection causes the Angle error occasion. The bearing can bear not only radial load, but also axial load for two-way operation. The inner bore of the tapered roller bearing is of cylindrical shape and conical shape, and the taper taper bore is of 1:30 and 1:12. The tapered bore bearing is equipped with a fixing sleeve or a dismounting sleeve, so that the tapered bore tapered ball bearing can be conveniently and quickly assembled on the optical shaft or the stepped machine shaft.
Common failure analysis of machining center spindle
2019 / 02 / 25
Machining center is a high speed, high precision, high automation, complicated structure, advanced processing equipment in modern manufacturing plays an enormous role, in the event of failure, greatly affect the efficiency of the enterprise, while machining center has a good fault self-diagnosis function, failure occurs most in machining center with alarm message, but sometimes the faults of machining center is integrated form, no alarm information, and is unable to distinguish between mechanical, electrical, or hydraulic pressure problem, CNC system, need maintenance personnel with more knowledge and comprehensive judgment ability and rich experience in maintenance. Based on the production practice, this paper analyzes the common spindle failure in machining center in detail, and puts forward the corresponding maintenance measures, which provides an effective reference for the maintenance of machining center. 1. Common failure analysis of machining center spindle Machining center spindle usually USES servo speed regulation motor speed regulation, its structure is relatively simple, but the machining center has automatic tool clip, and chip automatic removal device and the spindle quasi-stop device, the common spindle fault also occurs in these parts, under its specific analysis. 1.1 spindle heating and rotation accuracy reduction The phenomenon of fault: machining out the workpiece hole accuracy is low, cylindrical is very poor, spindle heat quickly, processing noise is very large. Fault cause analysis: through long-term observation of the spindle of the machine tool, it can be determined that the centering taper hole of the spindle of the machine tool is damaged in the process of multiple tool changes. The main cause of damage is the failure of pulling and inserting the tool in the process of use, which damages the conical surface of the spindle cente
The main problem of large wind power gearbox in China
2019 / 01 / 22
Bearing liable to damage In wind power generation device, due to its too large equipment, maintenance inconvenience, so the device must have a long working life, usually is not less than 20 years, and today's wind power equipment failure problems in gear box is growth, and the bearing is the most easy to occur in the gear box fault components, thus reasonably choose bearing is very important for the gear box of operation, but also accurately predict its service life. Bearing life mainly refers to the fatigue life of bearing, the bearing of the operation process, as a result of the ring and rolling body contact, make its surface after alternating load repeatedly function and form of fatigue spalling, if this fatigue spalling occurs outside the service life of bearing period is normal bearing damage, on the other hand, are not qualified.
2019 / 01 / 17
Huawei founder and CEO ren zhengfei gave a rare interview with foreign media at the company's headquarters in shenzhen today. He said in the interview that companies should be customer-centric and must abide by business rules. In addition, meng wanzhou, Mr Ren's daughter and huawei's chief financial officer, was recently detained in Canada at the request of the us government. Still, ren today gave President Donald trump the nod. "" I still believe he is a great President. In one sense, he boldly cut taxes. I think it's good for American industry. Mr. Ren, who would not comment on the arrest of his daughter, meng wanzhou, said he believed the legal systems in the United States and Canada were open and that he would await the court's decision
China's chang 'e-4 probe has landed at the South Pole on the far side of the moon
2019 / 01 / 08
At 10:26 on January 3, CHANG`E 4 detector successfully landed on the pre-selected landing site of the moon's far side, and at 11:40, it passed the "Queqiao" relay satellite and sent back the world's first close-up image of the moon's far side. The picture reveals the mystery of the far side of the moon. The mission realized the soft landing on the moon's far side of human detector and the first relay communication of the moon's far side and the earth, which opened a new chapter in human lunar exploration.
2018 / 12 / 21
High temperature bearings are mainly referring to biaxial stretching equipment chain clamp high temperature bearings with operating temperature 280 degrees and speed 350 meters -460 meters / minute. High temperature bearings are mainly used in electrical insulation film, polyamide film, packaging film, etc
2018 / 12 / 03
Recently, China Machinery Industry Science and Technology Awards Office issued the [Notice on the Recognition of 2018 China Machinery Industry Science and Technology Awards". They pointed out: "In order to promote the scientific and technological progress of the machinery industry, mobilize the enthusiasm of the scientific and technological personnel of the machinery industry, we decided to commend the 416 projects of the 2018 China Machinery Industry Science and Technology Awards. There are 5 special prizes, 47 first prizes, 137 second prizes and 227 third prizes. Among them, the bearing industry has won 1 first prize, 7 second prizes and 10 third prizes.
2018 / 11 / 20
Four times the national standardization technical committee rolling bearing seven-time meeting on November 12 ~ 15, 2018 held in nanning city in guangxi province. The meeting reviewed the rolling bearing no inner circle drawn cup needle roller bearing dimension, geometrical product specification (GPS) and tolerance values such as six national standard and the rolling bearing carburizing bearing steel parts heat treatment technical conditions "and so on seven industry standards. The members, experts observers and standard writing staff more than 70 standards for the full discussion, puts forward opinions and Suggestions on the terms of the standards.
2018 / 11 / 15
Summary of contents: At the end of the first quarter of 2011, the meeting of the Eleventh Second Council of the Shandong Province Bearing Fasteners Association was held in Funan County. Director General of the Axis Association Wang Quanqing, Director of the National Bearing Inspection Center Tang Jie, Chief of the Equipment Division of the Shandong Economic and Information Commission Zhao Ming, and Vice Chairman of Shandong Machinery Association Guan Fengsen attended the meeting and delivered speeches. At the end of the first quarter of 2011, the second meeting of the Eleventh Council of the Shandong Province Bearing Fastener Association was held in Funan County. Liu Dongfu, Chairman of the Shandong Province Bearing Association, and more than 80 representatives of the member institutions of the Association attended the meeting. First of all, the Tongnan County Standing Committee member and the deputy magistrate Tang Yinbo represented the county party committee and the government of the county government to congratulate the convening of this meeting, and briefly introduced the basic situation and economic development of Tongnan County. Subsequently, more than 30 advanced companies such as Linyi Kaiyuan Bearing Co., Ltd. were commended and awarded. At the meeting, the "Twelfth Five-Year Plan for the Development of the Bearing Industry in Shandong Province" was issued, which pointed out the direction for the development of the bearing industry in the province during the "Twelfth Five-Year Plan" period. Director General of the Axis Association Wang Quanqing, Director of the National Bearing Inspection Center Tang Jie, Chief of the Equipment Division of the Shandong Economic and Information Commission Zhao Ming, and Vice Chairman of Shandong Machinery Association Guan Fengsen attended the meeting and delivered speeches. Liu Dongfu, chairman of the Shandong Province Bearing Association
The First China International Import Expo Opened Today
2018 / 11 / 07
The first China International Import Expo opened at the National Convention and Exhibition Center (Shanghai) on the morning of the 5th. President Xi Jinping attended the opening ceremony and delivered a keynote speech. China International Import Expo is the world's first national-level exhibition with the theme of import. It is a major innovation in the history of international trade. The holding of the China International Import Expo is a major decision made by China to promote a new round of high-level opening up. It is a major initiative for China to open its market to the world. This reflects China's consistent position in supporting the multilateral trading system and promoting the development of free trade. It is China's practical action to promote an open world economy and support economic globalization.
Made in China 2025 brings new development opportunities for the bearing industry
2018 / 10 / 29
n made in China 2025, the plan vigorously promotes the development of key areas of robotics. Centering on the application needs of industrial robots and special robots such as automobile, machinery, electronics, hazardous goods manufacturing, national defense military industry, chemical industry and light industry, as well as service robots such as medical health, family service and education entertainment, we actively research and develop new products, promote the standardization and modularization development of robots, and expand market application. It breaks through the bottlenecks of key components such as robot body, reducer, servo motor, controller, sensor and driver, and system integration design and manufacturing.
Exploration of the lubrication mode of high-speed bearing
2018 / 09 / 27
Bearings with dust cover Bearings with dust cover, suffix 2z, dust cover is made of stainless steel. Dust cover Jade inner ring shoulder to form a very narrow gap, and can withstand high temperatures and high speed. Bearings with dust cover is mainly used in the inner ring rotating conditions. If the outer ring is turned, the bearings running at high speed will cause the grease to leak. Bearings with seals Bearings with contact seals, suffix 2rs1, seals are made of steel with anti-oil and anti-wear nitrile rubber. This thank the ring is allowed to work temperature is -40 to +100 ℃, in a short time up to + 120 ℃. The contact lip seals the shoulder of the inner ring. The outer edge of the seal ring groove in the outer ring, in this position can provide a good seal. When sealed bearings operate under extreme conditions, such as extreme speeds or temperatures, grease may leak between the inner ring and the seal. If leaks can cause damaging effects on the bearing configuration, special design steps are required.
Provide customized and intelligent motor for flexible manufacturing
2018 / 09 / 10
The demands of today's industrial customers are increasingly diversified, and the ability to customize motor and generator products is increasingly demanded. In order to meet the heavy industry, light industry, infrastructure and transportation sector of customization requirements, ABB motors and generators China local business unit provides customers with more and more customized products, including low voltage motor, high voltage, high and low voltage generator, mechanical transmission products, with strong local customization capabilities to win the market and customers. In order to be able to provide customers high quality customized products, ABB motors and generators China local business unit insists on customer oriented, through the powerful r&d strength and flexible production capacity, and constantly improve the customization capability, especially in the requirements definition, technical clarification, r&d investment, project management, product validation, bulk delivery, etc., thus won the customers highly recognized in several sectors, including port machinery industry. Shanghai zhenhua heavy industry co., LTD. (hereinafter referred to as "zhenhua heavy industry") and Shanghai ABB motor co., LTD. (hereinafter referred to as "ABB motor"), which have a market share of more than 70% in the global port machinery market, have numerous successful application cases in the port machinery field. Since June 2016, ABB and zhenhua heavy industries since the new strategic cooperation agreement, both sides form a complete set of development suitable for the standardization of port machinery industry, such as the standardization of gear box + + motor brake configuration, namely "3 in 1 machine", to provide domestic and international numerous well-known port and dock space more compact, more efficient and reliable stabilizer and car applications. At the same time, ABB provided zhenhua heavy industries with a number of localized products and soluti
Bearing raw material price rise, and is still continuing!
2018 / 09 / 03
A few days ago, a number of steel mills across the country released steel price adjustment information, steel price adjustment, range of 300-600rmb/ton. Affected by the rising price of steel raw materials, the price of auto parts such as steel leaf spring has increased to some extent. The rising price of steel and the increase of production cost also increase the difficulties to some extent. On the one hand, it needs to maintain normal operation of production; on the other hand, it needs to control product price to be within acceptable range of customers. Under the influence of national environmental protection policies, when north China enters the heating season in autumn, steel production will be restricted to a greater extent, and steel production will be upgraded to a greater extent, which means steel prices will face a new round of price increases.
Effect of electrical corrosion on insulating bearings
2018 / 08 / 30
In recent years, the demand of motors for insulating bearings has increased. Higher motor speeds and the wider use of variable frequency drives mean that adequate insulation is needed if current damage is to be avoided. This insulation must remain stable regardless of the environment. This is a specific problem faced by bearings during storage and handling in a humid environment. Electric corrosion can damage bearings in the following three ways: 1. High-current corrosion. When current flows from one bearing ring to another bearing ring through the rolling body and passes through the bearing, it will produce an effect similar to that of electric arc welding, forming a higher current density on the smaller contact surface. This heats the material to a tempering or even melting temperature, creates a fading zone (varying in size) at the tempering, secondary quenching or melting point of the material, and creates a pit at the melting point of the material. When leakage current corrosion current continues to flow through the working bearing in the form of an arc, the raceway surface will be affected by high temperature and corroded even if it is a low density current, because thousands of micro-pits are formed on the surface (mainly distributed on the rolling contact surface). These pits are very close to each other and are smaller in diameter than corrosion caused by large currents. Over time, there will be grooves (corrugation) in the raceway of the rings and rollers, known as secondary effects. The degree of damage depends on several factors: bearing type, bearing size, electrical mechanism, bearing load, speed and lubricant. In addition to the damage to the bearing steel surface, lubricant properties near the damage may degrade, resulting in poor lubrication and surface damage and spalling. The local high temperatures caused by the current can cause the additives in the lubricant to be burnt or burnt, causing the additives to be consumed more quickly.
2018 / 08 / 27
Bearings are mainly used to reduce friction between moving parts of mechanical components. With the technological progress of several vertical industries in Africa, such as automobile, construction, oil and gas, the application and function of bearing in African market keeps developing. The application of high-end technologies such as intelligent bearing also helps manufacturers to continuously monitor bearing operation. At present, the African bearing market is mainly dominated by South Africa, Nigeria, Egypt and Algeria. According to overseas media reports, South Africa's bearing market has great potential, with annual sales of about us $200 million to us $280 million. Most of the bearings currently used in South Africa are imported, mainly from Europe, the United States and the far east. Major bearing importers in South Africa include BearingMan, ina-fag, SKF and Timken. BearingMan has about a third of the market in South Africa. In addition, SKF and Timken have a bearing factory in South Africa, and the bearing type and style can be customized according to the user's requirements. BearingMan officials said that South Africa is basically not the country of origin of equipment manufacturing, and most of the bearings required for manufacturing large equipment such as automobiles and construction machinery in South Africa need to be imported from abroad. Therefore, from now on, Chinese bearing enterprises enter the South African market at the right time. According to the china-africa trade research center, the global bearing market was worth $75.91 billion in 2014, and the global bearing market is expected to reach $101 billion by 2018, with a compound annual growth rate estimated at 7.7 percent from 2014 to 2020. The bearing market for industrial original equipment accounts for about 40 per cent of world demand, including manufacturers of machinery and equipment in light industry and heavy industry, as well as manufacturers of aerospace, non-ro
Talk about motor bearing running ring
2018 / 08 / 24
Some enterprise friend say, have a batch of motor occurrence bearing system breakdown, end cover bearing chamber has apparent real rub, the wave form spring sheet inside bearing room also has apparent scratch. From the fault appearance, it is a typical problem of bearing outer ring running. Today we are going to talk about the motor bearing race Interaction between bearing and shaft and end cover Most motors use rolling bearings. The friction between the bearing roller and the inner and outer rings is rolling friction. The friction between the two contact surfaces is very small. The coordination between bearing and shaft, bearing and end cover is generally interference fit, and in a few cases transition fit. Static friction results from relatively large compressive pressure on each other. The bearing remains relatively static to the shaft, bearing and end cover, while mechanical energy is transferred by rotation between the rolling body and the inner (or outer) ring. Bearing run laps If the fit between the bearing and the shaft and bearing chamber is clearance fit, the torque will destroy the relative static state and produce sliding, the so-called "running ring" occurs, the sliding of the bearing inner ring and shaft is called running ring, and the sliding of the bearing outer ring and bearing chamber is called running ring. The appearance and harm of bearing running ring If the running ring of the bearing occurs, the temperature of the bearing part will be higher and the vibration will be greater. Disassembly inspection will find sliding marks on the surface of the shaft (bearing chamber), and even grinding grooves on the surface of the shaft or bearing chamber. From this case it can be concluded that the bearing running ring. The bearing running outer ring has a great negative impact on the equipment, which will aggravate the wear and even scrap of the matching parts, and even affect the precision of the supporting
INCREASING BEARING RELIABILITY OF WIND TURBINES
2018 / 08 / 20
The main shaft of wind turbine requires reliable bearing for stable operation. Some bearing damages will result in costly maintenance repairs. Selecting the proper bearing is really critical for wind turbine's overall performance. Wind-turbine designs commonly use spherical roller bearings to support and carry the main shaft loads. The single SRB design, known as a 3-point mount which is supported by a single main bearing and two reactionary torque arms of the gearbox. Unfortunately, some operators have experienced field failures much earlier than expected with some single SRB designs, which significantly reduced service life. Unplanned main shaft bearing replacement can cost wind-farm operators up to $450,000 to replace and have an obvious impact on financial performance.
Renaissance EMU Will Use Self-developed Bearings
2018 / 08 / 15
It is reported that after more than ten years, China bearing manufactures finally developed bearings for EMU and these bearings will be used on Renaissance EMU with the speed of 250 km/h.
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