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Home > Wear-Resistant Grinding Steel Ball Classification Suizhou Gaincin Machinery

Classification of Wear-Resistant Grinding Steel Ball - Suizhou Gaincin Machinery 

Grinding Steel ball is divided into three types: respectively forging steel ball and casting ball, and hot rolled steel ball.


Grinding forged steel ball: use the round steel cutting with air hammer forging and forging steel ball wear resistance with the use of the material of round steel and impurities or round steel quality has a lot to do.


Forging steel ball main material: 45 # steel, and 50 mn with more than 60 mn or 65 mn, the wear-resisting performance comparable to those of high chrome ball of 75 MNCR material.Forging steel ball advantages: broken rate is less than 1%, wear-resisting performance is good, price cheap, high cost performance.


Chromium alloy cast steel, cast steel ball is the main component of, oxidation resistance and high sulfur, diesel fuel, sea water corrosion resistance is poor, the intensity of the density is lower than forging steel ball, broken rate is relatively higher than that of other process of steel ball a lot.According to the discretion of the chromium content, wear-resisting ball under can be divided into the following several kinds:


1, chromium content of 1% 3%, hardness HRC 45 or more.The standard of wear-resistant steel ball, called low chrome alloy casting ball, low chromium balls are using intermediate frequency electric furnace smelting, the mode of metal mould and sand mould casting production.Its performance is suitable for the grinding accuracy is not high, wear little consumption of some metallurgical mines, slag, etc.


2, chrome content, hardness HRC acuity 47 4% - 4%.This standard is called multielement alloy ball, than low chrome steel ball strength, abrasion resistance is a bit high.


3, chromium content of 7% 10%, the hardness of HRC of 50 or more for chrome alloy casting ball, in aspects and so on performance is higher than complex alloy steel ball.


4, 10% to 14% or higher chromium content, hardness HRC 58, or high chromium alloy cast balls, which is high utilization rate of cement industry, wear resistance better a wear-resistant ball, application range is wide, but because of the price of high performance good reasons caused the causes of low ratio of replaced by forging products market gradually decline.


5, more than 14% chromium content, hardness HRC 58 or higher.This is a special high chrome steel balls, suitable for grinding is meticulous, consumes large industry, of course the price is quite high, slightly lower price than the high chrome ball.


Hot rolled grinding steel ball: according to the selection of material of different raw materials, steel ball, performance.

Generally can be divided into several so, 100 mm steel ball, for example:

Surface HRC55-60, the core hardness of 20 to 25

Surface hardness hardness of 55 to 60 the core 30-35

Surface hardness hardness of 58-63 the core 40-45

Hardness of surface hardness of 58-63, the core of 55 to 60

Surface hardness more than 60, the core hardness more than 58.