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What errors may occur during CNC machining and CNC machining​?

 CNC machining and numerical control machining are a method to control the movement of machine tools and the production process of machining through computer digitization and information digitization. It is an intelligent numerical control device developed as an economical, high-speed, reliable, multi-functional, intelligent, and open structure. CNC machining is also an important indicator that can measure the continuous level and comprehensive ability of a safety technology, as well as the degree of modernization of related science and technology capabilities, especially in aviation, biology, medical and other high-tech cultural industries, and it is also a powerful indicator. reflect. So, what errors may occur during CNC machining and CNC machining? Let us understand together:   The use of approximate machining motion or approximate tool contours causes errors in the CNC principle of machining. The reason why it is called machining principle error is because of the error in machining

What are the advantages of CNC machining of radiator parts?

For friends who have been in contact with the radiator component industry, they often see or hear "CNC machining", but too much exposure does not necessarily mean that many people understand. In fact, many questions are still about CNC machining. What are the advantages? Let's take a closer look. CNC machining is an index-controlled machine tool machining, which is a method of using digital information to control the machining process. Traditional mechanical processing is done manually by machine tools. During processing, the mechanical cutter is shaken to cut metal, and the accuracy is measured with calipers and other tools. However, traditional artificial intelligence processing is far from being able to meet the needs of production development. Therefore, the emergence of CNC machining provides the possibility for the standardization, precision and efficiency of mechanical product processing. The CNC machining process in the radiator component industry also shines. The

Eupec BSM100GT120DN2

# BSM100GT120DN2 Eupec BSM100GT120DN2 New 100A/1200V/IGBT/3U; IGBT Modules 1200V 100A TRIPACK , BSM100GT120DN2 pictures, BSM100GT120DN2 price, #BSM100GT120DN2 supplier ------------------------------------------------------------------- Email: [email protected] https://www.slw-ele.com/bsm100gt120dn2.html ------------------------------------------------------------------- BSM100GT120DN2 Manufacturer: Infineon Product Category: IGBT Modules RoHS: No Brand: Infineon Technologies Product: IGBT Silicon Modules Configuration: Hex Collector - Emitter Voltage VCEO Max: 1200 V Collector-Emitter Saturation Voltage: 2.5 V Continuous Collector Current at 25 C: 150 A Gate-Emitter Leakage Current: 400 nA Pd - Power Dissipation: 680 W Package / Case: EconoPACK 3A Maxim um Operating Temperature: + 150 C Maximum Gate Emitter Voltage: 20 V Minimum Operating Temperature: - 40 C Mounting Style: Screw Factory Pack Quantity: 10   100A/1200

Improper installation position of the breathing tube of the crankcase of the ND2 locomotive diesel engine

 

Tests on locomotives with crankcase explosions and further expansion to all ND2 locomotives in the entire section show that there is a higher pressure in the crankcase when the diesel engine is working normally. For example, when the ND2157# locomotive went online for testing, the oil and gas pressure in the crankcase was as high as 1.47MPa. When the ND2 locomotive diesel engine works under high load conditions, the temperature of the oil and gas in the crankcase is generally around 90°C, while the temperature of the exhaust gas in the exhaust box is as high as 500°C or more. Especially when the combustion state of the diesel engine is poor, the exhaust gas temperature is higher, which can reach 600-700°C. Although the high-speed exhaust gas flow in the exhaust box has a certain gas diversion effect on the breathing tube installed in it, because the temperature of the exhaust gas is too different from the temperature of the oil and gas, it is very easy to cause the high-temperature exhaust gas to flow back into the crankcase through the breathing tube. .

ND2 locomotive diesel engine crankcase breathing tube is installed improperly, not only can not effectively exhaust, but will cause the oil and gas pressure in the crankcase to rise due to the backflow of high-temperature exhaust gas. Improvement measures (1) Change the arc-shaped thin steel plate of the explosion-proof valve to flat thin steel plate, so that not only the upper and lower ends, but also the left and right sides of the explosion-proof valve can be closely attached to the surrounding rectangular hole of the intermediate body of the explosion-proof valve to improve its sealing performance . And when the explosion-proof valve is activated, the flat thin steel plate can also return to its original position. (2) Change the installation position of the crankcase breathing tube, change the breathing tube upwards to pass through the locomotive roof directly to the atmosphere, and install a rain cover on the exhaust port. In this way, not only the “backflow” problem is completely solved, but the airflow induction effect generated by the air sweeping over the exhaust port when the locomotive is running can still be used to pump air to the crankcase through the breathing tube to reduce the pressure in the box. The Nanchang Locomotive Depot conducted the above-mentioned reorientation and loading test on the exhaust ports of the crankcase breathing tubes of two ND2 locomotives, and achieved satisfactory results. (3) Install diesel engine crankcase overpressure automatic stop device. The device is composed of electrical and mechanical parts. When the pressure in the tank reaches a certain set value, it can promptly alarm and stop the diesel engine. The electrical part consists of a differential pressure control circuit, an alarm control circuit and a shutdown control circuit. There is a certain amount of conductive fluid in the U-shaped differential pressure gauge. The test tube connected to the test end is connected to the oil and gas separator of the crankcase of the diesel engine, and the vent tube at the vent end is in communication with the atmosphere.

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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