AVIC Tianshui New & High Abrasives Co., Ltd.--a specialized heavy-duty grinding wheel manufacturer in China.
Zhengzhou, China (PRWEB) November 06, 2014
Heavy-duty grinding wheels mainly use resin bond which has the best grinding effect in all kinds of abrasive products. Heavy-duty grinding wheels are widely used in steel ingot, steel slab, and steel plate coping as well as surface cleaning of all kinds of castings. Heavy-duty grinding wheels are also called snagging wheels or grinding billet wheels. Products of such type can easily be found on iAbrasive.com, a B2B abrasives webportal where specialized manufacturers, such as AVIC Tianshui New & High Abrasives Co., Ltd., are available. The development of heavy-duty grinding wheels depends on the development of the steel industry and corresponding development of high production grinding machines.
A slab sharpening machine is often used by metallurgical companies to conduct surface working on stainless steel continuous casting billet. Using a grinding wheel to grind the slab's surface and remove the oxide layer and surface defects is one of the important approaches of improving product quality. An important influencing factor is the metal removal rate and grinding ratio. The former is judged by the amount of removed metal in unit interval, while the latter refers to the ratio of the weight of removed metal and the consumptive weight. The way to reach a high metal removal rate is to improve the grinding wheel's linear velocity and increasing grinding force. However, the two ways will affect the grinding wheel's working life. So a better process is essential.
China's steel conditioning used to adopt suspension sharpening machines, the disadvantage of which are small grinding force, poor grinding quality, high labor intensity, and poor working conditions that are harmful for workers' health. The grinding process is so outdated that it can no long fit in with the modernized production of China's steel industry. Currently, China attaches great importance to steel conditioning. China has put research into the project and brought in some grinding billet machines from abroad to meet the increasing demand for China's steel industry. Since 1960s, foreign countries have devoted major efforts to heavy-duty grinding. To tackle the machining problem and the grinding efficiency, the high speed heavy-duty grinding process was developed in 2000. The characteristics of the new process is that it has achieved mechanization and automation. The grinding efficiency has been improved substantially, the metal removal rate being 200kg to 800kg per hour. In terms of grinding wheel manufacturing, higher requirements have been raised. The abrasive used in the grinding wheel should be of rough particle size that can bear high grinding force and the grinding wheel's working speed should reach more than 80m/s, the hardness should also reach super-hard levels to meet the demanding requirements of heavy-duty grinding technology. According to statistics, resin grinding wheels used in the steel sector take up 85%, among which heavy-duty abrasive products account for 45%, medium-duty abrasive products occupy 30%, and low-duty abrasive products hold 10%. Besides that, heavy-duty abrasive products and medium-duty abrasive products have a close relationship with China's crude steel yield.