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Manufacturing process for high-toughness forged and pressed anti-abrasion liner plates

A wear-resistant lining plate and manufacturing process technology, which is applied in the field of high-toughness forging wear-resistant lining plate manufacturing technology, can solve the problems of affecting the service life of the lining plate, many impurities, low impact toughness, etc., so as to reduce production costs, reduce pollution, reduce The effect of improving the efficiency of use

Inactive Publication Date: 2015-12-02
侯宇岷
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Problems solved by technology

[0002] At present, domestic mill liners are smelted with medium-frequency induction furnaces and cast into sand molds. There are many impurities in the molten iron, which are prone to defects such as pores, slag inclusions, and shrinkage cavities. Products produced by this process have low impact toughness. The impact value is only 3J / Cm2, and it is easy to break and fall when used in a semi-autogenous mill with a diameter of more than 10 meters, which seriously affects the service life of the liner

Method used

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  • Manufacturing process for high-toughness forged and pressed anti-abrasion liner plates

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Embodiment Construction

[0016] Accompanying drawing is a kind of specific embodiment of the present invention. The invention discloses a high-toughness forged wear-resistant liner manufacturing process, which includes the following steps: steel plate - cutting and blanking - forging - machining - quenching - tempering - inspection - finished product;

[0017] 1. The steel plate is cut, blanked and forged according to the size of the lining plate.

[0018] 2. The forging temperature is 950-1000°C, and heat preservation and slow cooling are carried out after forging;

[0019] 3. Machined bolt holes, grid plates and other parts, and the raised parts can be welded by resistance welding;

[0020] 4. Heating to 780--900°C with an electric furnace, and heat preservation treatment, after being out of the furnace at 750-850°C, quenching with water-based quenching liquid;

[0021] 5. Tempering at 200-320°C after quenching;

[0022] 6. Carry out grinding and inspection to obtain a high-performance forged lin...

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Abstract

The invention belongs to the technical field of medical images and particularly relates to a manufacturing process for high-toughness forged and pressed anti-abrasion liner plates. The manufacturing process for high-toughness forged and pressed anti-abrasion liner plates comprises the following steps of steel plate cutting and blanking, forging, machining, quenching, tempering, inspecting and product finishing. The manufacturing process has the beneficial effects that pollution and the production cost can be reduced during production, and the utilization efficiency of alloy elements can be improved; the liner plates can be used for semi-autogenous mills which are more than 13 meters high, and the phenomena of cracks and block falling are avoided.

Description

technical field [0001] The invention relates to a manufacturing process of a high-toughness forging wear-resistant liner. Background technique [0002] At present, domestic mill liners are smelted with medium-frequency induction furnaces and cast into sand molds. There are many impurities in the molten iron, which are prone to defects such as pores, slag inclusions, and shrinkage cavities. Products produced by this process have low impact toughness. The impact value is only 3J / Cm2, and it is easy to break and fall when used in a semi-autogenous mill with a diameter of more than 10 meters, which seriously affects the service life of the liner. Contents of the invention [0003] In order to make up for the defects of the prior art, the invention provides a high-toughness forging wear-resistant liner manufacturing process capable of reducing the content of non-metallic inclusions in steel and increasing the fatigue life of the material. [0004] The present invention is achi...

Claims

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Application Information

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IPC IPC(8): C21D8/02B23P15/00
Inventor 侯宇岷
Owner 侯宇岷
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