Ball grinding machine lining board and manufacturing method thereof
A technology of ball mill liner and manufacturing process, which is applied in the direction of manufacturing tools, heat treatment process control, furnace type, etc., can solve the problems of insufficient anti-wear performance, high production cost, large heat treatment deformation, etc., and achieve heat treatment process operation Simple and convenient, small product deformation, small environmental pollution effect
Inactive Publication Date: 2008-12-17
江西铜业集团(德兴)铸造有限公司
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- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
ZGMn13 series liners have insufficient anti-wear performance under the condition of small impact load, so that the service life is low; low-carbon low-alloy steel "water quenching" series liners have low hardness and large heat treatment deformation , poor wear resistance, low hardenability, cannot produce larger ball mill liners; medium carbon alloy steel "oil quenching" series liners, there is serious environmental pollution during heat treatment, and the production cost is high
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0013] A ball mill liner, the chemical composition (percentage by weight) is: C 0.8%, Si 0.6%, Mn 0.5%, Cr 3.4%, Ni 0.6%, Mo 0.4%, S<0.04%, P<0.04%, Yu The amount is Fe.
[0014] The manufacturing process of the ball mill liner is as follows: first heat the product to 880--920°C and quench the ball mill liner out of the furnace into water to cool it. air cooled. After cooling to room temperature, tempering at 520°C, the hardness HRc>45.
Embodiment 2
[0016] A ball mill liner, its chemical composition (percentage by weight) is: C 0.6%, Si 0.4%, Mn 0.8%, Cr 4.2%, Ni0.7%, Mo 0.3%, S<0.04%, P<0.04%, The balance is Fe.
[0017] The manufacturing process of the ball mill liner is as follows: first heat the product to 900--960°C and quench the ball mill liner out of the furnace into water to cool it. air cooled. After cooling to room temperature, tempering at 480°C, the hardness HRc>45.
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Abstract
A lining-board of ball grinding machine has the chemical component (weight percentage ) as follows: C 0.6-0.8%, Si 0.3-0.8%, Mn 0.3-0.8%, Cr 2.0-4.5%, Ni 0.2-2.0%, Mo 0.1-0.8%, S<0.04%, P<0.04%, and the rest is Fe. Said fabrication technology is as follows: heating the lining-board of ball grinding machine to 860-960 DEG C, keeping it at the temperature for 2-3 hours, then quenching it in water for cooling and quick-speed dropping down the temperature, taking it out of water when the surface temperature of the piece of work drops down 580-680 DEG C, cooling it to room temperture using air at air of forced convection, performing a flash-back fire at 480-520 DEG C, naturally cooling it to get the final product.Said ball mill lining plate in accordance with the present invention possesses high hardness, intensity, better hardenability, high antifric-tion property, simple and convenient heat treating technological operation, little environment pollution, small producers stock transmogrification, a service life 1.5-2.5 times that of high manganese steel product only a cost 1.5 times that of the high manganese steel.
Description
technical field [0001] The invention relates to a liner plate of a ball mill used in fields such as mines, building materials, electric power and the like and a manufacturing process thereof. Background technique [0002] At present, the materials used for the liner of the ball mill are mainly: ZGMn13 series, low carbon low alloy steel "water quenching" series and medium carbon alloy steel "oil quenching" series, etc. ZGMn13 series liners have insufficient anti-wear performance under the condition of small impact load, so that the service life is low; low-carbon low-alloy steel "water quenching" series liners have low hardness and large heat treatment deformation , poor wear resistance, low hardenability, cannot produce larger ball mill liners; medium carbon alloy steel "oil quenching" series liners, there is serious environmental pollution during heat treatment, and the production cost is high. Contents of the invention [0003] The object of the present invention is to ...
Claims
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IPC IPC(8): C22C38/44C21D1/18C21D9/46C21D11/00
Inventor 黄汝清李大平张平和李振球
Owner 江西铜业集团(德兴)铸造有限公司