CN104674030A - Method for manufacturing tin brass - Google Patents

Abstract

The invention discloses a method for manufacturing a tin brass and belongs to the field of nonferrous metals. The method comprises the following steps: (1) preparing each component of the tin brass; (2) filling a copper and a covering agent into a preheated crucible, rapidly melting under a micro-oxidation atmosphere; (3) heating the fuse element to 1150 DEG C, and adding a half amount of the phosphor copper; (4) adding a preheated recycled scrap to melt, and adding the Zn at 1150-1200 DEG C; (5) after the Zn is completely melted, adding the Sn, and adding the other half amount of the phosphor copper; (6) doing a furnace front detection experiment, adjusting the temperature after the experiment is qualified, and casting at 1100-1160 DEG C. The problem of poor quality caused by an inappropriate melting method in the current tin brass manufacture process is solved. The method is simple, low in cost and easy to process.

Description

A kind of manufacture method of one-ton brass

Technical field

The invention belongs to non-ferrous metal field, more particularly, relate to a kind of method for the manufacture of one-ton brass.

Background technology

Copper and alloy thereof have excellent chemistry, physical and mechanical properties, solidity to corrosion in air, fresh water, seawater and non-oxidizable acids medium is good, thus Chang Zuowei functional materials and structured material, and being widely used in the fields such as aviation, shipbuilding, electrician, its consumption is only second to aluminium alloy in non-ferrous alloy material.

One-ton brass is all corrosion-resistant in fresh water and seawater, general term admiraltymetal.Can carry out hot and cold press working, Cutting free, weldability is good, has higher solidity to corrosion in the seawater, the manufacture of part be applicable to boats and ships part, contacting with seawater and gasoline etc.But in the use procedure of one-ton brass, usually there is the problem that its quality is short of.

Summary of the invention

For existing one-ton brass in the fabrication process, because smelting process is improper, and the problem causing quality to be short of, the invention provides a kind of manufacture method of one-ton brass, by changing its smelting technology, its quality being improved, reach the object improving its quality.

For solving the problem, the present invention adopts following technical scheme.

A manufacture method for one-ton brass, comprises the following steps:

(1) preparation of each component of one-ton brass:

The mass percent of each component of one-ton brass is: Sn:1.5%, Zn:25%, all the other are Cu;

(2) copper and insulating covering agent are loaded in preheated crucible, rapid melting under micro-oxidizing atmosphere;

(3) melt is warming up to 1150 DEG C, adds the phosphor-copper of a half-value dose, the total mass of phosphor-copper accounts for the 0.4-0.7% of alloy solution total mass, and carries out stirring deoxidation;

(4) add preheated foundry returns, after fusing, at 1150-1200 DEG C, add Zn;

(5) after Zn melts completely, add Sn, finally add the phosphor-copper of second half dosage;

(6) stokehold detection experiment, qualified rear adjustment temperature, 1100-1160 DEG C of cast.

Preferably, in described step (3), the total mass of phosphor-copper accounts for 0.6% of alloy solution total mass.

Compared to prior art, beneficial effect of the present invention is:

(1) the present invention is by changing its smelting technology, and its quality is improved.

(2) the inventive method is simple, and cost is low, handling ease.

Embodiment

Describe the present invention below in conjunction with embodiment.

embodiment 1

A manufacture method for one-ton brass, comprises the following steps:

(1) preparation of each component of one-ton brass:

The mass percent of each component of one-ton brass is: Sn:1.5%, Zn:25%, all the other are Cu;

(2) copper and insulating covering agent are loaded in preheated crucible, rapid melting under micro-oxidizing atmosphere;

(3) melt is warming up to 1150 DEG C, adds the phosphor-copper of a half-value dose, the total mass of phosphor-copper accounts for 0.6% of alloy solution total mass, and carries out stirring deoxidation;

(4) add preheated foundry returns, after fusing, at 1150-1200 DEG C, add Zn;

(5) after Zn melts completely, add Sn, finally add the phosphor-copper of second half dosage;

(6) stokehold detection experiment, qualified rear adjustment temperature, 1100-1160 DEG C of cast.

Claims (2)

1. a manufacture method for one-ton brass, is characterized in that following steps:

(1) preparation of each component of one-ton brass:

The mass percent of each component of one-ton brass is: Sn:1.5%, Zn:25%, all the other are Cu;

(2) copper and insulating covering agent are loaded in preheated crucible, rapid melting under micro-oxidizing atmosphere;

(3) melt is warming up to 1150 DEG C, adds the phosphor-copper of a half-value dose, the total mass of phosphor-copper accounts for the 0.4-0.7% of alloy solution total mass, and carries out stirring deoxidation;

(4) add preheated foundry returns, after fusing, at 1150-1200 DEG C, add Zn;

(5) after Zn melts completely, add Sn, finally add the phosphor-copper of second half dosage;

(6) stokehold detection experiment, qualified rear adjustment temperature, 1100-1160 DEG C of cast.

2. the manufacture method of a kind of one-ton brass according to claim 1, is characterized in that, in described step (3), the total mass of phosphor-copper accounts for 0.6% of alloy solution total mass.