Bosch Angle Grinder

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Manufacturing process testing equipment, restricting circuit breaker industry

With the industrial automation and unattended urban and rural power supply technology, low-voltage air circuit breakers in recent years, the rapid development of the industry have achieved good results. Currently, domestic enterprises and foreign well-known companies, are the next great efforts to develop and launch new products. Chinese low-voltage air circuit breakers from the current characteristics of the development point of view, the company's R & D with foreign well-known basic synchronization design ideas, but because of the quality of corporate financial and personnel gap, the domestic enterprise itself the product of the few original and therefore declared the patent invention Quantity is running out.

Chinese low-voltage air circuit breaker with the world advanced level, in addition to the inadequate development of design in the manufacturing process and testing equipment are also a wide gap.

In the manufacturing process, such as welding silver alloy contacts, reaching less than a welded piece does not touch red-hot copper, copper films are not touch the original hardness of annealed and maintenance requirements; soft link is the lack of welding has been welding Silver conductive parts in the welding process should not be red-hot in order to ensure that the silver is not oxidized color, but because the temperature is too low can not be welded to the soft copper braided wire connection contact with conductive parts at melting as a whole, thus affecting the the product quality.

In the test, especially in the enterprise on the factory inspection, there are a lot of indicators are not consistent with national standards and IEC standards, and its parameter adjustment tolerance is also large, so a lot of products in the user should not have happened at the wrong moves moving irregularities. For example, adjust the action short tripper value, according to the standard provisions should be adopted by none other than periodic components of the sine wave current, but many enterprises simple equipment, were adopted by the test current with a non-periodic component, which moves to adjust the value of the factory than similar foreign Products and accurate. There are also individual units by increasing phase selection switch on the switch program, but because every time need to re-tune parameters in order to ensure accuracy, while its life is limited, so in practice, Taiwan and Taiwan can not do the standard calibration. Special equipment is currently abroad, has been used to test current, without the non-periodic component of the sine wave current, fully in line with national standards and IEC standards.

China's current low-voltage air circuit breaker development, need-related design, material, process, equipment should have a new development. The new design requires original insights, but also can take advantage of foreign products after the patent by the secondary development of domestic enterprises to use to create new patents. The new requirements can not rely on imported materials, need to develop their own domestic enterprises, such as the new rectangular soft braided line development, increasing low-voltage air circuit breaker short-circuit characteristics of targets, raising the localization rate and lower costs. The new technology is constantly improving the quality of relying on low-voltage air circuit breakers, welding process using the traditional equipment are clearly difficult to meet quality requirements, at present, some foreign companies huge sums of money from the procurement of this equipment, which undoubtedly reduced the gap with foreign enterprises, but from the whole on to truly meet the market demand for domestic equipment, but also the need for further efforts.
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What kind of grease to use in a Bosch 1347a 4 1/2 angle grinder and what is PT-100 grease?

I took this grinder gear housing apart only to find a little bit of grease left in it. After I cleaned it out and tried putting some high heat bearing grease in it, the gear housing began to get very hot. I found out I was putting to much in there and the grease I am supposed to get cost $25, it said it was a PT-100 grease what does this mean. I would like to know if the gear housing is supposed to get hot and also if a super lube "00" grease would be ok or is there any other grease I can get cheaper that is PT-100 or a better grease for the grinder. Thank you.

it is just a gear box install a good grease high temp is ok or standard grease is fine

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