Chain oxidation solution of non-standard shaped chain stamping to improve

Chain production equipment development, although after a relatively long development path and its manufacturing level and technical level has also been substantial leap, chain equipment manufacturing enterprises for the national chain enterprises offers a wide range of high efficiency, advanced, automation equipment, basic meet the demand of the development of chain enterprises.

Blanking equipment: 1, chain plate chain chain plate stamping equipment in the industry, from the original single single operation to automation now, stamping production line technology, its technology has been rapidly improved. Especially for small and medium size chain, most domestic manufacturers basic to realize high speed cutting, imported or domestic high-speed punching machine, realized the big coil with automatic send, coil, progressive die and composite mold more than automatic blanking, cutting speed of 120-240 times/min. Product specifications from 6.35 25.40 mm pitch, production efficiency close to or reached the international advanced level. But at present there are many domestic enterprises to stay in the original level, remains to be improved. Especially not the alien chain stamping automation level, more needs to be improved.

2, pin machine cutting equipment: most of the domestic chain enterprises are generally used high speed cutting machine, the production efficiency of 300 times/min, after cutting face can no longer scraping flat. Cutting die and high-speed wear-resisting new materials, greatly improving the service life, these devices are widely used in the pitch of 19.05 mm standard roller chain, but for large size chain pin shaft or use the metal-cutting equipment such as lathes, corresponding production process efficiency is lower. Some of the large size of hot upsetting technology on engineering chain pin shaft, great increase in labor productivity and material utilization, reduce the manufacturing cost, this is our development direction of industry chain pin shaft processing.

3, sleeve forming machine: in the 90 s in China basically achieved in terms of the parts processing professional production, processing technology in the original cut off - bags U - squeeze into garden - - plastic rolling process, improve production efficiency and improve the quality of rolled, not only greatly improve the sleeve whole degrees and joint tightness, production efficiency is also increased from the original 150 times/min to 230 times/min. The equipment is mainly used for pitch 38.1 mm standard roller chain in the box, but also has a large size of professional manufacturer production domestic standard chain have joint sleeve, and rolling process is quite advanced, and batch production. Domestic most of the large size LianTiaoChang with slit sleeve instead of seamless steel sleeve, the production cost is reduced, at the same time using cold heading method processing sleeve technology in some manufacturers also gradually popularized.

4, roller forming machine processing: five imported from Taiwan in the 90 s Labour roller cold dui machine, successively in nanjing tianbao mechanical digestion, absorption and zhejiang permanent machinery group, completed the localization, and widely used in the industry, has realized the specialization of production.

5, chain assembly machine: our country has experienced hand chain assembly, single machine assembly, the article into the assembly, assembly of pretension after running-in development course. Developed by zhejiang machinery group enduring high speed chain assembly automatic line adopted foreign advanced system chain manufacturing equipment technology, with pitch hole for the locating datum, and improve the positioning precision of the assembly, and can enhance the efficiency of assembly, and a steel ball hole, hydraulic riveting head, and automatic disassembly parts leak and running-in hole section, and other functions, the production efficiency can be up to 140 RPM, widely used in industry, shorten the gap with foreign advanced system chain level. But cuhk specifications of chain assembly level is relatively backward, and needs to be improved.

6, heat-treatment: chain industry widely used mesh belt type heat treatment production line, the quality is stable, the production efficiency increase year by year. More domestic manufacturers, but the chain industry is used widely in industrial enterprise in suzhou, suzhou new ling enterprise, jiangsu FengDong furnace industry, Taiwan three furnace industry and so on, need to adopt treated by nitriding, permeability C converter tilting type, the relatively poor quality stability production equipment development. In terms of large size chain, especially the engineering chain, the industry also USES C furnace wall permeability, high frequency, or local high-frequency processing, the production efficiency is low, this kind of processing way biggest drawback is not easy to control the quality stability. There are some manufacturers in the use of vacuum tempering furnace production equipment development, reduce the parts surface oxidation.