CN104630519A - Casting brass melting technology - Google Patents

Abstract

The invention discloses a casting brass melting technology. The technology comprises the following steps: preheating a crucible to dark red, and adding charcoal to make the thickness reaches 20-40mm to the bottom of the crucible; adding pure copper, rapidly heating for melting, adding an intermediate alloy according to a sequence from the high melting point to the low melting point, adding returns, and supplementing charcoal; adding phosphorus and copper after complete melting of the copper when the temperature reaches 1150-1200DEG C in order to carry out deoxidation; adding an aluminum-copper intermediate alloy at 1100-1200DEG C, carrying out power cut at 1100-1150DEG C, adding pure zinc and pure aluminum in batches, and stirring; and discharging the obtained material from a furnace, removing slag, adjusting the temperature of the obtained alloy liquid, rapidly removing the alloy liquid from the furnace, and casting. The technology has the advantages of simplicity, operation convenience, easy process control, production cost reduction and production efficiency improvement.

Description

Brass melting technology is used in casting

 

Technical field

The invention belongs to smelting copper alloy technique, be specifically related to a kind of casting brass melting technology.

 

Background technology

Casting is a class important in non-ferrous metal with pure Copper and its alloy, uses wider in actual production.Conventional copper alloy is mainly divided into two large classes by composition difference, i.e. cast brass and cast bronze.No matter be sand mold casting or investment cast, melting is all a vital ring in Foundry Production, and the melting of each Albatra metal-has points of resemblance, and has difference again.

 

Summary of the invention

In order to overcome the above-mentioned defect that prior art field exists, the object of the invention is to, a kind of casting brass melting technology is provided, easy to operate.

Casting brass melting technology provided by the invention, technical process comprises:

A, crucible is preheated to garnet, and bottom it, adds the thick charcoal of 20-40mm;

B, add fine copper and rapid temperature increases fusing after, add master alloy by low-melting order after first fusing point height, finally add foundry returns again, add charcoal simultaneously;

C, after copper all melts, add phosphor-copper when temperature reaches 1150-1200 DEG C and carry out deoxidation;

D, add aluminum bronze intermediate alloy at 1100-1200 DEG C, have a power failure at 1100-1150 DEG C adds pure zinc, fine aluminium stirring in batches;

E, come out of the stove and skim, cast of coming out of the stove rapidly after adjustment aluminium alloy temperature.

Casting brass melting technology provided by the invention, its beneficial effect is, technique is simple, easy to operate, and operation is easy to control, and reduces production cost, improves production efficiency.

 

Embodiment

Below in conjunction with an embodiment, casting brass melting technology provided by the invention is described in detail.

 

Embodiment

A, crucible is preheated to garnet, and bottom it, adds the thick charcoal of 20-40mm;

B, add fine copper and rapid temperature increases fusing after, add master alloy by low-melting order after first fusing point height, finally add foundry returns again, add charcoal simultaneously;

C, after copper all melts, add phosphor-copper when temperature reaches 1150-1200 DEG C and carry out deoxidation;

D, add aluminum bronze intermediate alloy at 1100-1200 DEG C, have a power failure at 1100-1150 DEG C adds pure zinc, fine aluminium stirring in batches;

E, come out of the stove and skim, cast of coming out of the stove rapidly after adjustment aluminium alloy temperature.

Claims (1)

1. a brass melting technology is used in casting, and it is characterized in that, technical process comprises:

A, crucible is preheated to garnet, and bottom it, adds the thick charcoal of 20-40mm;

B, add fine copper and rapid temperature increases fusing after, add master alloy by low-melting order after first fusing point height, finally add foundry returns again, add charcoal simultaneously;

C, after copper all melts, add phosphor-copper when temperature reaches 1150-1200 DEG C and carry out deoxidation;

D, add aluminum bronze intermediate alloy at 1100-1200 DEG C, have a power failure at 1100-1150 DEG C adds pure zinc, fine aluminium stirring in batches;

E, come out of the stove and skim, cast of coming out of the stove rapidly after adjustment aluminium alloy temperature.