CBN abrasive is mainly used for steel parts, such as high speed steel, die steel, 45 steel, etc., can be made into electroplating CBN, resin CBN, sintered CBN. Can be made into grinding wheel, cutting pieces, grinding head. Abrasive sharp, high temperature resistance, good thermal stability, wear resistance. The hardness of CBN is higher than that of ordinary abrasives and the ability to maintain shape is one of the main characteristics of high performance abrasives. CBN is very resistant to pressure. CBN has good thermal conductivity and can achieve cold cutting during grinding.
strong wear resistance, long life
The grinding ratio of CBN wheel can reach 3500-5500, which is 100 times higher than that of ordinary corundum wheel and 3-5 times higher than that of diamond wheel.
environmental protection, no pollution, energy saving and consumption reduction
No too much powder dust.
High work efficiency and good comprehensive economic benefits
The grinding is sharp, the grinding force is small, the dressing cycle of CBN wheel is long, the dressing amount is less, and the replacement time is long. Long service cycle, high grinding ratio, can obtain better economy, good shape retention in use, do not need to change and trim grinding wheel often, save working hours, improve working conditions, is conducive to machining operation.
Cubic boron nitride is not suitable for grinding hard metals and non-metallic materials. At high grinding temperature, CBN will react with alkaline aqueous solution. CBN grinding wheel will decompose in alkaline solution at 300℃, and can decompose in trace amount in boiling water, which will destroy the crystal shape of grinding grains. Therefore, oily coolant should be used instead of water-based coolant during grinding.
Cbn Cutting Discs,Flap Disc,Grinding Disc,Cbn Cutting Blade Henan Jinlun Superhard Material Co., Ltd , https://www.jinlunsuperhard.com
Save money and worry about poor quality helmets
A few days ago, I visited the Jiuxing Market in Shanghai to get a sense of the local market scene. In a small shop selling labor insurance products, I met a customer who came in looking for a safety helmet. The shopkeeper first pointed to a helmet on the shelf and said, “This one is good, it has a LA card, and it costs 15 yuan.†The customer didn’t seem interested.
The shopkeeper quickly shifted his attention to a less noticeable helmet on the same shelf and said, “This one is cheaper—only 10 yuan, and it also has a LA permit.†Confident that this would satisfy the customer, he thought he had saved them a lot of money. But the customer still wasn’t convinced. Frustrated but determined to win the deal, the shopkeeper dug deep into the bottom of the shelf and pulled out a helmet that was almost hidden. “Five yuan, no proof,†he said with a smile.
It seems the customer was finally impressed by the shopkeeper’s enthusiasm. After some back-and-forth, the shopkeeper grew impatient and finally said, “You can go elsewhere. I don’t have this kind of helmet here.†As I walked away, I couldn’t help but think: if things are this bad in Jiuxing Market, then how much worse could it be elsewhere?
In the past, I’ve read media reports about workers using substandard helmets. Some broke easily, and even those that looked fine had dents or weak spots. At the time, I found it hard to believe someone would actually buy such low-quality products. Today, however, I can’t help but feel a bit of a chill. The industry has always emphasized safety, yet the cost of a high-quality helmet is around 18 yuan, while a mid-range one costs at least 13 yuan. The cheapest ones, often made from recycled materials, might only cost 10 yuan.
But the market price isn’t just about the product—it includes distribution, taxes, and operational costs. I used to blame the manufacturers for producing poor quality items, thinking they lacked conscience and only cared about profit. But now I wonder: if there's a demand, why wouldn't a factory produce it? It’s not that they don’t want to do a good job; it’s that the market supports both good and bad products. This two-way demand leads to frequent safety accidents caused by faulty helmets.
Ultimately, the buyer ends up losing out—saving a few yuan but risking their life in the process. Safety shouldn’t be a luxury, but it’s becoming one.
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