Easily-cutting brass and processing method of strips thereof

A technology of easy cutting and brass strips, which is applied in the field of processing brass and its strips, can solve problems such as physical health threats and non-compliance, and achieve the effects of recycling and improving hardness
CN101654749AInactive Publication Date: 2010-02-24ANHUI CHUJIANG TECHCAL NEW MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ANHUI CHUJIANG TECHCAL NEW MATERIAL CO LTD
Publication Date
2010-02-24
Estimated Expiration
Not applicable · inactive patent
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Abstract

The invention discloses an easily-cutting brass and a processing method of strips thereof, wherein the brass comprises the following ingredients in percentage by weight: 57-60 percent of Cu, less thanor equal to 0.05 percent of Pb, less than or equal to 0.7 percent of Sn, 0.5-0.6 percent of Ni, less than or equal to 0.2 percent of impurity elements, and the balance of Zn. The processing method ofstrips of the brass comprises the working procedures of smelting and continuous casting, hot rolling, rough rolling, annealing, first acid-washing, fine rolling and second acid-washing. Compared withthe prior art, the copper alloy of the invention can substitute the prior Hpb59-1 lead brass, achieves the environmental protection of a key strip and takes white-plated materials as raw materials for producing, thereby the recycling problem of the white-plated materials is solved, and the processing ratio is increased by utilizing the characteristics of hard and crisp (Alpha plus Beta) two-phaseorganization in the alloy and the solution strengthening of Sn and Ni elements so as to improve the hardness and the strength of copper alloy products.
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Description

Technical field:

[0001] The invention belongs to a processing method of free-cutting brass and strip material, in particular to a processing method of brass and strip material which are used for key production and can replace Hpb59-1 lead. Background technique:

[0002] The brass usually used to produce keys is Hpb59-1 lead brass, its chemical weight composition is: copper: 57.0% ~ 60.0%; lead: 0.8% ~ 1.9%; nickel: 1.0%; iron: ≤0.5%; impurities The sum ≤ 1.0%, zinc: the balance, it has high strength and excellent machinability, because Hpb59-1 lead brass contains 0.8% ~ 1.9% lead, there is a great threat to human health, does not meet Modern environmental protection requirements. Contents of the invention

[0003] The first technical problem to be solved by the present invention is to provide an environmentally friendly free-cutting brass.

[0004] The second technical problem to be solved by the present invention is the processing method of the above-mentioned brass str...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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