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Working principle of slow wire processing

 Slow wire walking, also called low-speed wire walking, is a kind of CNC machining machine tool that uses continuously moving fine metal wire as an electrode to pulse spark discharge on the workpiece to generate a high temperature of over 6000 degrees, ablate metal and cut into a workpiece. The principle of wire processing is the phenomenon that there is a gap between the wire electrode and the workpiece, and the metal is removed by continuous discharge. Since the slow-moving wire cutting machine adopts the method of wire electrode continuous feeding, that is, the wire electrode is processed during the movement, so even if the wire electrode is worn out, it can be continuously supplemented, so it can improve the machining accuracy of the parts and slow the wire. The surface roughness of the workpiece processed by the cutting machine can usually reach Ra=0.8μm and above, and the roundness error, linear error and dimensional error of the slow-moving wire cutting machine are much bett...

Hydrostatic guideway of CNC machining lathe

The static pressure slide rail (TTW guide) of the CNC machining lathe transfers the oil with a certain pressure through the throttle to the oil cavity between the sliding surfaces of the slide rail (TTW guide) to form a pressure oil film to float the moving parts , Make the sliding rail (TTW guide) surface in a pure liquid friction state.   CNC machining General CNC machining usually refers to computer digital control precision machining, CNC machining lathe, CNC machining milling machine, CNC machining c17200   beryllium   copper   and milling machine, etc. The feed route of finishing is basically carried out along the part contour sequence. Therefore, the focus of determining the feed route is to determine the feed route of rough machining and idle stroke. In the numerical control processing, the control system issues instructions to make the tool perform various motions that meet the requirements, and the shape and size of the workpiece are expressed in the form o...

Hydrostatic guideway of CNC machining lathe

The static pressure slide rail (TTW guide) of the CNC machining lathe transfers the oil with a certain pressure through the throttle to the oil cavity between the sliding surfaces of the slide rail (TTW guide) to form a pressure oil film to float the moving parts , Make the sliding rail (TTW guide) surface in a pure liquid friction state.   CNC machining General CNC machining usually refers to computer digital control precision machining, CNC machining lathe, CNC machining milling machine, CNC machining c17200   beryllium   copper   and milling machine, etc. The feed route of finishing is basically carried out along the part contour sequence. Therefore, the focus of determining the feed route is to determine the feed route of rough machining and idle stroke. In the numerical control processing, the control system issues instructions to make the tool perform various motions that meet the requirements, and the shape and size of the workpiece are expressed in the form o...

Fluctuations in auto parts prices

As sales rebounded and the prices of raw materials are almost comprehensive, the prices of auto parts have been increased several times, which has pushed up the prices of auto parts. The thin plates in ferrous metals increased from 20 yuan per ton at the beginning of the year to 6,000 yuan in July, leading to an increase in the prices of car cabs, bodies, and cargo compartments. The prices of non-ferrous metals such as copper, tungsten, lead, and zinc have risen across the board. The price in 1989 was significantly lower than the previous year. In the first half of 1989, the sales of accessories were still optimistic, with prices showing an upward trend. This has a direct impact on the continued price increase of some raw materials. The ex-factory prices of finished products based on the above-mentioned raw materials in auto parts will be increased. The increase in the price of some accessories is also a “tail-lifting” factor in the price of the previous year. Insufficient supply of some spare parts in short supply has also driven up prices. Some social outlets are reselling and increasing prices at different levels, which has further contributed to the “price increase wind.”

As the country has strengthened governance and rectification in many ways, metal materials and major automobile varieties have implemented the highest price limits, and auto parts have implemented price management, unified sales prices and rates, and promoted the improvement of market order, and the price increase has slowed down and stabilized. , Around the fourth quarter of last year, the auto parts market tended to be light. After September and October in Shanghai, the sales of accessories went from bad to worse. The price of auto parts has also seen a partial price drop. In a year, there were two rises and one fall, with an increase of 41% and a decrease of 25%, which can be described as big ups and downs. However, from the perspective of the whole year, the price of accessories in 1989 was relatively stable compared with the previous year. The price adjustment of Shanghai real estate accessories decreased by about 34% compared with 1988, and the average price increase rate was more than 20%. In April of that year, Shanghai Real Estate's SH76OA car parts increased by more than 20%, SH161, 361 heavy diesel vehicle parts increased by 20% within the plan, and 50% outside the plan. SH142 truck parts were all unplanned tasks from that year, and the price was changed from the original price. It rose by 20% to 80% in June of the same year. However, in 1987, the auto parts market was still in a “trough” period. Many manufacturers sought more sales with small profits, and parts did not increase in price, and there were even price drops. Therefore, although the overall price generally rises, the increase is not large, about 20% on average. For automotive parts and parts machining, PTJ Shop offers the highest degree of OEM service with a basis of 10+ years experience serving the automotive industry. Our automotive precision shop and experts deliver confidence. We have perfected the art of producing large component volumes with complete JIT reliability, backed by the quality and long-term reliability our customers expect.

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