Bimetal composite inner sleeve, bimetal composite outer sleeve and manufacturing method thereof

A composite jacket and bimetal technology, applied in the field of construction machinery, can solve the problems of short life, poor wear resistance, etc., and achieve the effect of improving the overall life, wear resistance, and life

Pending Publication Date: 2020-08-18

王学伍

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AI-Extracted Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a bimetallic composite inner sleeve, a bimetallic composite outer sleeve and a manufacturing ...

Method used

Inner sleeve body and overcoat body of the present invention, due to adopting the method for centrifugal casting to cast inner sleeve body and overcoat body respectively, make inner sleeve outer layer 1 and inner sleeve inner layer 2, outer coat inner layer 3 and outer coat outer layer 4 are formed into one body by metal welding, and the materials of the inner layer 1 (inner layer 3) and the outer layer 2 (outer layer 4) of the inner sleeve are different, and the inner layer 1 (inner layer 3) Compared with the outer layer 2 of the inner sleeve (the outer layer 4 of the outer sleeve), the hardness and wear resistance are improved. At present, the inner sleeve and the outer sleeve are mostly produced by forging or pipe materials in the market, and the materials are generally 40Cr and 20CrNiMu commonly used in the market. , the surface hardness can reach HRC58-62, the tensile strength is 980Mp, the hardness is high, the cutting difficulty is larg...

Abstract

The invention discloses a bimetal composite inner sleeve, a bimetal composite outer sleeve and a manufacturing method of the bimetal composite inner sleeve and the bimetal composite outer sleeve, andbelongs to the technical field of engineering machinery. The defect that in the prior art, an inner sleeve and an outer sleeve are poor in abrasion resistance and difficult to disassemble is overcome.The bimetal composite inner sleeve comprises an inner sleeve body, the inner sleeve body comprises an inner sleeve outer layer and an inner sleeve inner layer, and the inner sleeve inner layer and the inner sleeve outer layer form a whole in a metal welding mode; and the bimetal composite outer sleeve comprises an outer sleeve body, the outer sleeve body comprises an outer sleeve outer layer andan outer sleeve inner layer, and the outer sleeve inner layer and the outer sleeve outer layer form a whole in a metal welding mode. The bimetal composite inner sleeve and the bimetal composite outersleeve are mainly used for fixing and guiding a drill rod in a breaking hammer.

Application Domain

Furnace typesGrain treatments +1

Technology Topic

Manufacturing engineeringMetal +4

Image

Examples

Experimental program(6)

Example Embodiment

[0028] Example 1:

[0029] A bimetal composite inner sleeve, comprising an inner sleeve body, characterized in that: the inner sleeve body includes an inner sleeve outer layer 1 and an inner sleeve inner layer 2, and the inner sleeve inner layer 2 is connected to the inner sleeve by metal welding. The outer layer 1 is integrated.

Example Embodiment

[0030] Example 2:

[0031] A bimetal composite inner sleeve. The material of the inner layer 2 of the inner sleeve is calculated by weight percentage, and its composition is: C: 0.3-0.45%, Cr: 12-18.5%, Mn: 0.3-0.7%, V: 0.18 -0.26%, Si: 0.2-0.9%, Mo: 0.6-1.5%, S: ≤0.03%, P: ≤0.04%, Nb: 0.06-0.2%, N: ≤0.4%, Ni: 0.5-1.5%, The rest is Fe and unavoidable impurities; the material of the inner sleeve and outer layer 1 is calculated by weight percentage, and its composition is: C: 0.2-0.3%, Cr: 5-7.5%, Mn: 0.3-0.6%, Si: 0.2-0.9%, Mo: 0.3-0.7%, S: ≤0.03%, P: ≤0.04%, Nb: 0.06-0.1%, N: ≤0.4%, Ni: ≤0.4%, the rest is Fe and unavoidable Impurities; other structures are the same as in Example 1.

Example Embodiment

[0032] Example 3:

[0033] A bimetal composite sleeve, the thickness of the inner layer 2 of the inner sleeve is 2mm-4mm; other structures are the same as the first embodiment.

PUM

Property	Measurement	Unit
Thickness	2.0 ~ 4.0	mm
Thickness	6.0 ~ 12.0	mm
Tensile strength	980.0	mP

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Improve wear resistance
extend your life

Bimetal composite inner sleeve, bimetal composite outer sleeve and manufacturing method thereof

A composite jacket and bimetal technology, applied in the field of construction machinery, can solve the problems of short life, poor wear resistance, etc., and achieve the effect of improving the overall life, wear resistance, and life

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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