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High-performance breaking device rear cylinder body and machining method thereof

A technology of crushing equipment and processing methods, which is applied in the direction of heat treatment equipment, manufacturing tools, furnace types, etc., can solve the problems such as easy cracks in the rear cylinder body, and achieve the effects of reducing deformation dead zone, stable performance, and not easy to crack

Active Publication Date: 2018-01-05
马鞍山平文锻造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that the rear cylinder of the existing crushing equipment is prone to cracks during processing and use, the present invention provides a high-performance crushing equipment rear cylinder and its processing method, combined with a specific steel ingot material, using a protective medium during heat treatment The interior of the rear cylinder is protected and heat treatment is carried out gradually. The protective medium inside the rear cylinder can prevent the inner cavity from being too high during the heating process, and prevent the quenching medium from entering the cavity during quenching to cause internal quenching. rigid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A rear cylinder of high-performance crushing equipment. The components and weight percentages of the rear cylinder blank are: C: 0.20%, Si: 0.26%, Mn: 0.45%, Cr: 1.3%, Ni≤0.20%, Mo : 0.38%, P≤0.02%, S≤0.02%, the rest are iron and unavoidable impurities; the material is heat treated after forging and machining, and the inside of the rear cylinder is quenched and protected by a protective medium during heat treatment . The protective medium consists of 50% attapulgite of 1-2mm, 30% of attapulgite of 0.1-0.5mm, 20% of clay of 0.01-0.05mm, NaHCO 3 0.08%, due to the relatively large amount of attapulgite and clay, NaHCO 3 Relatively very small, in the actual production ratio, mainly consider the percentage of attapulgite and clay together to reach 100%, NaHCO 3 The amount is negligible, but NaHCO 3 It is necessary to join.

[0038] A processing method for improving the performance of the rear cylinder of the above-mentioned crushing equipment, the steps comprising:

[00...

Embodiment 2

[0049] A rear cylinder of high-performance crushing equipment, the components and weight percentages of the rear cylinder blank are: C: 0.25%, Si: 0.20%, Mn: 0.40%, Cr: 1.5%, Ni≤0.20%, Mo : 0.35%, P≤0.02%, S≤0.02%, the rest are iron and unavoidable impurities; the material is heat treated after forging and machining, and the inside of the rear cylinder is quenched and protected by a protective medium during the heat treatment . The protective medium is 40% of 1-2mm attapulgite, 35% of 0.1-0.5mm attapulgite, 25% of 0.01-0.05mm clay, NaHCO 3 0.05%.

[0050] A processing method for improving the performance of the rear cylinder of the above-mentioned crushing equipment, the steps comprising:

[0051] (1) Steel ingot heating: heating the steel ingot composed of the above-mentioned ingredients;

[0052] (2) Two upsetting and two pulling: the steel ingot is forged by the forging method of two upsetting and two pulling, and the forging ratio is selected to be about 2.3; as the fo...

Embodiment 3

[0061]A rear cylinder of high-performance crushing equipment, the components and weight percentages of the rear cylinder blank are: C: 0.29%, Si: 0.30%, Mn: 0.58%, Cr: 1.2%, Ni≤0.20%, Mo : 0.42%, P≤0.02%, S≤0.02%, the rest are iron and unavoidable impurities; the material is heat treated after forging and machining, and the inside of the rear cylinder body is quenched and protected by a protective medium during heat treatment . The protective medium consists of 55% attapulgite of 1~2mm, 30% of attapulgite of 0.1~0.5mm, 15% of clay of 0.01~0.05mm, NaHCO 3 0.1%.

[0062] A processing method for improving the performance of the rear cylinder of the above-mentioned crushing equipment, the steps comprising:

[0063] (1) Steel ingot heating: heating the steel ingot composed of the above-mentioned ingredients;

[0064] (2) Two upsetting and two pulling: the steel ingot is forged by the forging method of two upsetting and two pulling, and the forging ratio is selected to be about ...

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Abstract

The invention discloses a high-performance breaking device rear cylinder body and a machining method thereof, and belongs to the technical field of breaking cylinder body machining. The problem that an existing breaking device rear cylinder body is easy to damage due to cracking in the machining and using process is solved. A rear cylinder body workblank comprises components including, by weight percent, 0.20 to 0.29% of C, 0.20 to 0.30% of Si, 0.40 to 0.58% of Mn, 1.2 to 1.5% of Cr, not larger than 0.20% of Ni, 0.35 to 0.42% of Mo, not larger than 0.02% of P, not larger than 0.02% of S and the balance iron and inevitable impurities. The material is subject to forging, machining and forming and then is subject to heat treatment, in the heat treatment process, a protection medium is used isused for carrying out quenching protection on the interior of the rear cylinder body, the protection medium in the rear cylinder body can prevent the temperature of an inner cavity from being too high in the heating process, and during quenching, the phenomenon that the quenching media enter the cavity, and the interior hardening capacity is caused is avoided.

Description

technical field [0001] The invention belongs to the technical field of crushing cylinder processing, and more specifically relates to a rear cylinder of high-performance crushing equipment and a processing method thereof. Background technique [0002] The hydraulic breaker is a new type of high-efficiency hydraulic shock and vibration machine tool. It is a supporting working part of the excavator or loader. When working, the high-pressure oil output by the working machine is used to realize the high-frequency reciprocating motion of the breaker piston in the cylinder, so that Hit the drill rod to do work externally. Hydraulic breakers are mainly used for crushing, demolition, and excavation of hard layers in construction, and have the advantages of large impact, convenient use, good mobility and high efficiency. With the development of technology, hydraulic breakers are more and more widely used in all walks of life in society. From the initial drilling operation for mine r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/22C22C38/44C21D1/18C21D1/70C21D1/26C21D9/00C21D3/06B23P15/00
Inventor 陈明荣王兴强
Owner 马鞍山平文锻造有限公司
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