(1) Diamond pen dressing grinding wheel: According to the size of diamond particles and their distribution in the pen, diamond pens can be divided into several types, such as chain and powder. The alloy with strong bonding force is used as the bonding agent, so the diamond grinding wheel particles are not easy to fall off during use, so there is no need to repair the grinding process.
(2) Grinding wheel dressing by rolling method: Diamond grinding wheel dressing by rolling method. Grinding wheel drives the rolling wheel at the speed of 1~2m/s by reducing the speed
Made of, carbide or abrasive) rotary. The pressure of rolling wheel applied to grinding wheel is about 3~5MPa, grinding the surface of diamond grinding wheel
Make the abrasive particles fall off. The grinding wheel dressing by rolling method has better cutting performance and lower cost, but the surface roughness of the grinding part is rougher and rolling
Damage, short life, easy loss of precision. Therefore, this dressing method is mainly used for forming grinding with small batch size and low precision.
Green silicon carbide or ceramic white corundum is used for dressing. Dressing ring is the first choice for dressing diamond grinding wheel or CBN grinding wheel. It is sharp in dressing, not easy to remove sand and has high dressing efficiency. Wheel Dresser,Dressing Tools,Dressing Roller,Grinding Wheel Dresser Henan Jinlun Superhard Material Co., Ltd , https://www.jlsuperhard.com
On July 20, the Public Security Bureau of Guiyang City issued a public security report in mid-July, notifying the public security situation from July 11 to 20. At the same time, according to various cases of theft in vehicles in Guiyang City, the public was reminded to pay attention to vehicle anti-theft No, both increase. "
Recently, there have been many cases of theft of items in vehicles in the urban area of ​​Guiyang. In response, the police have filed a case to investigate. From the police's knowledge, criminals mainly use the method of prying the trunk, smashing the window, and patting the door. Here, the police specially reminded the majority of drivers to do "two nos, two improvements" to prevent theft before they happen.
1. Do not leave "thoughts" for thieves. Do not store valuables and clothing in the car.
2. Don't save money. Owners should not park their vehicles on remote roads or around unattended banks, shopping malls, and dining establishments in order to save parking fees.
3. Improve vigilance. Owners should be more vigilant during driving, especially when driving alone, and do not open windows or doors easily.
4. Improve anti-theft capability. Owners can properly install anti-theft alarms and other equipment to improve the vehicle's anti-theft performance.
Beware of theft in the car