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Feed end liner for semi-automatic mill in beneficiation plant and machining process of feed end liner

A technology for processing technology and feeding end, which is applied in the field of liner plate for feeding end of semi-automatic mill in mineral processing plant and its processing technology, which can solve problems affecting the civilized production of modern enterprises, waste of manpower, material and financial resources, large amount of maintenance and replacement, etc. problems, to achieve the effect of improving initial hardness and overall mechanical properties, improving efficiency, and avoiding duplication of labor

Pending Publication Date: 2020-08-28
JIANGSU XINGYUAN POWER PLANT & METALLURGICAL EQUIP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the long-term harsh working conditions of liners and grinding balls, the amount of maintenance and replacement is quite large, which not only wastes manpower, material resources, and financial resources, but also directly affects production efficiency and civilized production of modern enterprises.

Method used

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  • Feed end liner for semi-automatic mill in beneficiation plant and machining process of feed end liner
  • Feed end liner for semi-automatic mill in beneficiation plant and machining process of feed end liner

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Embodiment Construction

[0034] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0035] The liner at the feed end is composed of the following components in mass fraction: 0.705% C, 0.242% Si, 0.628% Mn, 2.15% Cr, 0.266% Mo, 0.0311% P, 0.110% S.

[0036] The liner at the feed end is 1410mm long and 440mm wide. The 80mm protrusion on one side of the liner is a lifting strip. There are two bolt holes in the middle of the liner with a distance of 870mm. The cylinder liner is fixed by two M58 flat head bolts. On the barrel; the thickness of the liner at the feed end is 70mm, the hardness of the liner is HRC48-52, and the wear-resistant liner and the barrel are fixed with high-strength bolts.

[0037] During processing, product size chain confirmation;

[0038] The second step, the mold model production;

[0039] The third step, ...

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Abstract

The invention discloses a feed end liner for a semi-automatic mill in a beneficiation plant and a machining process of the feed end liner. The feed end liner is composed of the following components of, by mass fraction, 0.705% of C, 0.242% of Si, 0.628% of Mn, 2.15% of Cr, 0.266% of Mo, 0.0311% of P and 0.110% of S. According to the feed end liner for the semi-automatic mill in the beneficiation plant and the machining process of the feed end liner, after the structure of a shell liner is improved, by improving the formula of ultrahigh manganese alloy steel, adopting new technology of heat treatment and other measures, the problems of hardenability, creep resistance and abrasion resistance of the abrasion-resistant ultrahigh manganese alloy steel are well solved, the initial hardness and overall mechanical properties of the ultrahigh manganese alloy steel are improved, various process indexes of the semi-automatic mill are improved to a certain extent, the semi-automatic mill, a grid plate and an end liner are abraded synchronously and replaced together, the overhaul frequency and time are reduced, duplication of labor is avoided, the cost is reduced, and the benefits are increased.

Description

technical field [0001] The invention belongs to the field of liner plate processing, and in particular relates to a liner plate at the feed end of a semi-automatic mill in a mineral processing plant and a processing technology thereof. Background technique [0002] The semi-autogenous mill is the main crushing and grinding equipment in the production of thermal power, mining, chemical, metallurgy and other industries at home and abroad, and the liner and grinding ball are the main working parts of the semi-autogenous mill in normal operation. With the development of modern production, the diameter of semi-autogenous mills is getting larger and larger, and mills with a diameter of about five meters have been widely used in production, so the quality requirements for liners and grinding balls are getting higher and higher. Due to the long-term harsh working conditions of liners and grinding balls, the amount of maintenance and replacement is quite large, which not only wastes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C17/22C22C38/02C22C38/04C22C38/22C22C38/00C21D1/18C22C38/58C22C38/44C22C38/50C22C38/46C21D6/00C21D9/00
CPCB02C17/22C21D1/18C21D6/004C21D6/005C21D6/008C21D9/0081C22C38/002C22C38/005C22C38/02C22C38/04C22C38/22C22C38/44C22C38/46C22C38/50C22C38/58
Inventor 朱国伟
Owner JIANGSU XINGYUAN POWER PLANT & METALLURGICAL EQUIP MFG
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