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Zhejiang heat treatment workpiece special external grinding machine big hole grinding wheel 300 outer diameter 75 inner chrome corundum wholesale
Surface grinding machine, grinding wheel, white corundum grinding wheel, all kinds of grinding wheels can be customized
AbrasivesThe main characteristics include abrasive, particle size, hardness, microstructure and binder and other five factors. According to different uses, proper selection can directly improve the processing quality and production efficiency.
Complete representation of grinding wheelBy:1Product shape+2Product size+3Abrasives types+4granularity+5hardness+6Organization number+7binder+8Safe line speed+9Production batch composition:
For example:P 500 * 65 * 203 WA 60K 8V 35m/s
9Safety lot number is supplied individually according to production.
The shape of grinding wheel can be divided into two parts:
（PDASingle sided concave
Tables of general metric size and inch size
Corundum abrasives can be divided into two categories: natural and artificial. High quality natural corundum is mainly produced in India, Canada and South Africa a few countries and regions. The most widely used is artificial corundum abrasives. The artificial corundum is produced by the method of capacitance, not only high yield, large scale, but also the chemical composition, mineral composition and crystal structure can be controlled by smelting process, so there are a variety of corundum varieties with different properties.
The variety code of artificial corundum abrasives in China is listed below:
use The way
Brown corundum is brown in appearance. It is characterized by high hardness, toughness, sharp particles and low price. It is suitable for grinding metal with high tensile strength and without other abrasives. It can be used instead.
It is widely used for rough grinding of ordinary steel, such as carbon steel, general alloy steel, calcined cast iron and hard bronze.
The hardness of white corundum is slightly higher than that of brown corundum, but the toughness is slightly worse. When grinding, it is easy to cut into the workpiece, with good self sharpening, little heat, high grinding efficiency, and higher price than brown corundum,
Suitable for steel with higher hardness, such as high speed steel, high carbon steel, quenched steel and alloy steel.
Single crystal corundum
The particle of single crystal corundum is composed of single crystal, and has good multi cutting edge, high hardness and toughness, strong grinding ability, small grinding heat, high production cost, waste gas and waste water in production, low output.
It can be used for hard and tough hard metal materials, such as stainless steel, high vanadium high speed steel, heat resistant alloy steel and easy to deform and burn parts. Considering the limitation of single crystal corundum abrasive, it is generally recommended for grinding of heat-resistant alloy steel and refractory metal material.
The color, appearance and chemical composition of brown corundum are similar to those of brown corundum, but the size of crystal is small50-280umThe abrasive grain has good toughness, high strength and good self sharpening.
It is suitable for processing stainless steel, carbon steel, nodular cast iron, and so on. The grinding method is suitable for forming grinding, penetration grinding, fine grinding and heavy load grinding.
As a derivative of white corundum, the appearance is rose, the hardness is similar to that of white corundum, the toughness is slightly higher than that of Bai Gangyuqie, the grinding performance is good, the grinding accuracy is high, and the abrasive tool made of this abrasive has good shape retention.
The application range is similar to that of white corundum. It is especially suitable for fine grinding of various tools, measuring instruments and instrument parts. Usually, chromium corundum has better grinding performance than white corundum.
Its hardness is slightly lower, but its toughness is large and its strength is high. Usually, the size of the crystal is fine and the wear resistance is good.
Foreign zircon corundum is mainly used for heavy load grinding, suitable for grinding heat-resistant steel, titanium alloy steel and austenitic stainless steel.
With a fine sintering alumina or alumina powder which is characterized, good toughness, abrasive can be made into various special shapes and sizes.
As for heavy-duty steel wheel Dian, suitable for rough grinding stainless steel ingot.
A variety of brown corundum, which is black in appearance, is characterized by low alumina content. Low hardness but good toughness.
It is mainly used for free grinding, such as rough grinding before plating, and also used for making coated abrasives, resin cutting pieces, polishing blocks, etc.
Types of binders
V Vitrified bond
B Resin bond
R Rubber bond
M Metal bond
Universal hardness grade
soft I J K L M………….hard
General standard for grinding wheel size：
24# 36# 46# 60# 80# 100# 120# 150# 180# 240# 320# 400# 600#。。。。。。。。。 Grain size directly affects the final finish of the product.
Routine organization number
6 （7 8） 10 12 Brackets are the most commonly used. The tissue number is used to measure the pore space, and the higher the grit rate (sand loss rate) is, the smaller the tissue number is.
Safe line speed of grinding wheel
Most commonly used35m/s 45m/s High speed linear speed:50m/s 60m/s 65m/s The maximum speed of the machine tool can not exceed the safety line speed of the grinding wheel when choosing the grinding wheel, otherwise there will be a safety accident.