Our company specializing in the production of high, medium and low chromium DIA 17 mm-DIA 120 mm. HuaMin steel ball with precise dimensions, roundness of the geometric shape, high hardness and good mechanical properties and wear resistance has, deformation, craze of the excellent quality. The product widely used in large mining, coal-fired power stations, cement and other industries, deeply domestic and foreign customers.

1, high chromium ball quality index:

 

Contain chromium quartile of 10.0%, carbon content in between 1.80% and 3.20% are called high chromium ball, national standards high chromium ball hardness (HRC) must quartile 58 above, impact value ak quartile 3.0 J / ㎝ 2, if the hardness of high chromium ball must adopt high temperature quenching and tempering treatment (at present domestic high chromium ball quenching oil quenching and wind quenching two quenching mode), such as hardness testing (HRC) below 54 indicated below high chromium ball have not been quenching and tempering treatment2, chromium ball in quality index:

 

Contain chromium amount 3.0% ~ 7.0%, carbon content in between 1.80% and 3.20% of all called chromium ball, impact value ak quartile 2.0 J / ㎝ 2, national standards of chromium ball (HRC) must hardness quartile 47 above, to ensure the quality of steel ball of the ball high temperature must be adopted to chrome tempering treatment (in order to achieve the purpose of eliminating casting stress), such as steel ball surface is dark red indicates that the product already after high temperature tempering treatment, such as steel ball surface is still metal instinctive quality indicates that the product not high temperature tempering treatment.

 

3, low chromium ball quality index:

 

Contain chromium amount 0.5% ~ 2.5%, carbon content in between 1.80% and 3.20% are called low chromium ball, national standards low chromium ball hardness (HRC) must be more than 45 frequency, impact value ak quartile 1.5 J / ㎝ 2, to ensure the quality of steel ball low chromium ball also need the high temperature tempering treatment (in order to achieve the purpose of eliminating casting stress), such as steel ball surface is dark red indicates that the product already after high temperature tempering treatment, such as steel ball surface is still metal instinctive quality indicates that the product not high temperature tempering treatment.

 

We produce wear-resisting of steel ball basically has the following advantages

1, whole high hardness: surface hardness to 58-65 HRC, volume hardness of 56-63 HRC, and the hardness gradient distribution average.

2, impact toughness high: impact toughness more than 12 J / ㎝ 2.

3, broken rate is low: the fragmentation is generally casting of the grinding ball 10 times above, balls impact times over 20000 times, the actual broken rate is not higher than 1%.

4, deformation: steel ball after not deformation, lost the circle.

 

For further understand any of the following ways to welcome contact

 

24 hours service hot line: +86-13658620726

Q Q: 708832981

 

contact : Mr Cao