Bearing forging technology of several big problems

Forging technology is good or bad will directly affect the performance of the bearing, so a lot of people bearing forging technology has a lot of problems need to be asked, such as 'small and medium-sized bearing forging what problem now? What is the effect of, forging quality of bearing performance? , bearing forging technology upgrading is under what respect? , 'the Chinese bearing network as bearing professional services platform, to make a detailed answer. Now some problems of the small and medium-sized bearing forging technology, mainly include: (1) due to the long-term industry 'heavy cold light hot' thought, the influence of the forging industry employees' cultural level is generally low, coupled with bad working conditions, work environment, think that as long as there is strength to go, don't realize the forging is a special process, its quality has a significant influence on bearing life. 2 engaged in small scale of enterprises of bearing forging forging process level the good and bad are intermingled, many small and medium-sized enterprises (smes) are still stay in forging shape control stage. (3) forging enterprise common heating mode was improved, using medium frequency induction heating, but only stay in the steel bar only the heating stage, didn't realize the importance of the heating quality, also does not have the medium frequency induction forging heating industry technical specification, the quality of the there is a big risk. (4) process equipment most used compressor attachment, manual operation, human factors influence is very big, poor quality consistency, such as forging folding, size difference, lack of material, overheating and even burnt fillet, wet splitting, etc. 5] due to the forging processing hard work environment, young people are reluctant to engage in, recruitment difficult are common problems existing in the industry, forging enterprise more difficult, for forging automation, informationization upgrade challenge. [6] the production efficiency is low, the processing cost is high, the enterprise in the lower levels of ecosystem, living environment deteriorate. What are the implications the forging quality of bearing performance? (1) forgings carbide network, grain size, streamline, affect the bearing fatigue life. 2 forging crack, overheating, burnt, seriously affect the reliability of the bearing. (3) forging dimensions, geometric accuracy: affect processing automation, material utilization. (4) the production efficiency, automation, affect forging manufacturing cost, quality consistency. Under the bearing forging technology upgrade is what respect? Here is mainly manifested in two aspects, one is the materials technology upgrade, the second is forging automation transformation. Material transformation and upgrading of technology: standard upgrade by GB/T 18254 - Upgrade to the GB/T 18254-2002 2016, is mainly manifested in the following respects. The improvement of smelting process: vacuum smelting. 2 added trace harmful residual elements control: increased from 5 to 12. (3) the key indicators of oxygen, titanium content, the DS inclusion control close to or reached the international advanced level. Uniformity (4) improved significantly: the main composition segregation improved significantly controlled rolling process of controlled cooling applications, control rolling temperature and cooling ways, to achieve double refinement ( Austenite grain refinement), carbide particles , improve the carbide network level. 5] carbides strip qualification rate improved significantly: control pouring superheating temperature, increase the ratio of rolling, guarantee the high temperature diffusion annealing time. [6] bearing steel quality consistency: significantly enhance physical metallurgy furnace quality qualified rate. Forging automation transformation: 1, high speed forging. Automatic heating, automatic shearing, manipulator automatic transmission, automatic forming, automatic punching, separation, achieve rapid forging, the maximum speed of up to 180 times/min, apply to large quantities of small and medium-sized bearings, auto parts forging, high speed forging technology superiority manifests in the following respects. 1) Efficient. High degree of automation, high efficiency: with hart AMP30S high-speed forging bell automatic production line, FIG. 1) For example: high speed forging produce about 33000 units, the average class 3 operators; Same product produce about 8400 units, common vertical forging class staff 10 people, per capita labor productivity increased 13 times. 2) High quality. Forging processing of high precision, less car allowance, less waste of raw materials; Good internal quality of forgings, streamline distribution is beneficial to enhance the impact toughness and wear resistance, bearing life can more than double. 3) Head to tail jilt automatically, remove the bar detection blind area, end burr. 4) Energy saving. With conventional forging than energy saving 10% ~ 15%, saving raw materials by 10% ~ 20%, 95% water saving. 5) Security. The whole forging process in a closed state is complete; Production process is easy to control, it is not easy to produce water quenching crack, mixing and burnt. 6) Environmental protection. No 'three wastes', clean and tidy environment, noise is less than 80 db; Cooling water closed cycle use, basic realize zero discharge. Step 2, transfer beam. Using hot die forging equipment, completed on the same machine press cake, forming, such as separation, punching process, processes between the walking beam, suitable for medium-sized bearing forging, production rhythm 10 ~ 15 times/min. 3, robots instead of human. According to the forging process, many sets of compressor attachment, product passed the robot transfer between press, suitable for large bearing or gear billet forging, production rhythm 4 ~ 8 times/min. 4, robots instead of human. Transform existing forging connections, the local location using simple robots instead of human, simple operation, less investment, and is suitable for small business automation reconstruction. 【 Warm prompt. 【 The bearing network] Some information from the Internet, and strive to secure timely, accurate, aims to deliver more information, does not represent our views to its approval or responsibility for their authenticity. 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