CN108220820A

CN108220820A - A kind of antifriction alloy steel sheath

Info

Publication number: CN108220820A
Application number: CN201611133082.2A
Authority: CN
Inventors: 张长凤
Original assignee: Zhenjiang Su Baixin Engineering Machinery Co Ltd
Current assignee: Zhenjiang Su Baixin Engineering Machinery Co Ltd
Priority date: 2016-12-10
Filing date: 2016-12-10
Publication date: 2018-06-29

Abstract

The invention discloses one kind to be applied to the indoor antifriction alloy steel sheath of ball blast.The alloying component of its weight percent is：Carbon 2.3~2.9%, silicon 1.5~1.8%, manganese 13~15%, chromium 2.5~3.5%, nickel 0.7~0.9%, titanium 0.7~0.9%, silicon 0.2~0.3%, rare earth 0.7~1.5%, sulphur 0.02~0.04%, surplus are iron.It has the advantages that:Since the present invention has selected suitable material extremely proportion relation, thus the backplate produced has good hardness, intensity and toughness, good barrier propterty can be reached, service life is long, has better economy and comprehensive mechanical performance, particularly pass through rational treatment process, making it, surface generates rapidly processing hardening, and with martensitic traoformation when during ball blast by severe impact, case hardness is made to be increased to 180~190 HRC, but also with extraordinary toughness.

Description

A kind of antifriction alloy steel sheath

Technical field

It is particularly a kind of to be applied to the indoor resistance to break-in of ball blast the present invention relates to a kind of high manganese wear-resistant steel rolling sheath material Golden steel sheath.

Background technology

Shot-blasting machine is to be sprayed bullet at a high speed using high-speed rotating impeller head, bullet is made to have certain kinetic energy, at a high speed The bullet of linear motion directly impacts on the surface of the workpiece, and to remove the rusty stain of workpiece surface, but shot-blasting machine is carrying out ball blast During have bullet and beaten on the roller in the chamber body of shot-blasting machine around workpiece, the bullet of high speed can be by roller over time It punches, therefore sheath is usually installed on the roller of shot blasting machine chamber in the prior art, existing protective plate type is relatively more, generally Using rich chromium cast iron or manganese steel material, but in the bullet for being faced with injection at a high speed, existing sheath makes it due to problem of materials Intensity it is still not good enough, service life is not grown, therefore will be replaced after a period of use, thus not only causes cost On waste and also delay the duration, influence production efficiency.

Invention content

The technical problem to be solved in the present invention is to provide a kind of wearability is good, good toughness, shock resistance and service life length Antifriction alloy steel sheath.

In order to solve the above-mentioned technical problem, antifriction alloy steel sheath of the invention, the alloying component of weight percent are： Carbon 2.3~2.9%, silicon 1.5~1.8%, manganese 13~15%, chromium 2. 5~3.5%, nickel 0. 7~0. 9%, titanium 0.7~0.9%, silicon 0.2~0.3%, rare earth 0. 7~1.5%, sulphur 0.02~0.04%, surplus is iron.

The alloying component of its weight percent is：Carbon 2.5%, silicon 1.7%, manganese 13%, chromium 3%, nickel 0. 8%, titanium 0.8%, silicon 0.28%, rare earth 0.9%, sulphur 0.03%, surplus is iron.

A kind for the treatment of process of above-mentioned antifriction alloy steel sheath, includes the following steps：

A, stove is entered using room temperature, cast member is heated to 1350~1550 DEG C, keeps the temperature 15~20 minutes, then heat to 1750~ 1900 DEG C, 30~40 minutes are kept the temperature, later quick water cooling；

B, cast member is heated to 900~1000 DEG C to quench again, is tempered in time after quenching, temperature is 450~5 00 DEG C.

Compared to the prior art, the invention has the advantages that:

Since the present invention has selected suitable material extremely proportion relation, the backplate thus produced has good hardness, strong Degree and toughness, can reach good barrier propterty, and service life is long, have better economy and comprehensive mechanical performance, especially It is by rational treatment process, making it, surface generates rapidly processing hardening, and companion when during ball blast by severe impact There is martensitic traoformation, case hardness is made to be increased to 180~190 HRC, but also with extraordinary toughness.

Specific embodiment

With reference to embodiment, the antifriction alloy steel sheath of the present invention is described in further detail.

The antifriction alloy steel sheath of the present invention, the alloying component of weight percent are：Carbon 2.3~2.9%, silicon 1.5~ 1.8%, manganese 13~15%, chromium 2. 5~3.5%, nickel 0. 7~0. 9%, titanium 0.7~0.9%, silicon 0.2~0.3%, rare earth 0. 7~ 1.5%, sulphur 0.02~0.04%, surplus is iron.

Claims

1. a kind of antifriction alloy steel sheath, it is characterised in that：The alloying component of its weight percent is：Carbon 2.3~2.9%, silicon 1.5~1.8%, manganese 13~15%, chromium 2. 5~3.5%, nickel 0. 7~0. 9%, titanium 0.7~0.9%, silicon 0.2~0.3%, rare earth 0. 7~1.5%, sulphur 0.02~0.04%, surplus is iron.

2. antifriction alloy steel sheath described in accordance with the claim 1, the alloying component of weight percent are：Carbon 2.5%, silicon 1.7%, manganese 13%, chromium 3%, nickel 0. 8%, titanium 0.8%, silicon 0.28%, rare earth 0.9%, sulphur 0.03%, surplus is iron.

3. a kind for the treatment of process of antifriction alloy steel sheath as described in claim 1, includes the following steps：