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Copper steel duplex metal composite casting method

A technology of composite casting and bimetal, which is applied in the field of bimetal casting, can solve the problems of restricting the production and application of bimetal composite casting materials, short metal contact time, and fast cooling speed, so as to save the heat treatment process, reduce equipment investment, good performance effect

Inactive Publication Date: 2018-03-30
安徽恒利增材制造科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bimetallic composite casting materials, due to the synthesis of casting method, simple process and low cost, have great application prospects, but the contact time of the two metals during the casting process is short and the cooling speed is fast, which seriously affects the combination of the two. Become a bottleneck restricting the production and application of bimetallic composite casting materials

Method used

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Embodiment Construction

[0019] The technical solutions in the present invention are clearly and completely described below in conjunction with the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0020] A copper-steel bimetal composite casting method, comprising the following steps:

[0021] Step 1: Clean the steel substrate with 15% NaOH aqueous solution, rinse with distilled water until neutral, then use 10% HCl aqueous solution to remove rust, and then rinse with distilled water until neutral, dry and place in a dry place. to be used in the environment;

[0022] Step 2: Preheat the steel substrate in molten borax at 1100-1200°C for 2.5 hours, and keep it warm for casting when the preheating temperature of the steel substrate reaches 1150°C;

[0023] Step 3: Preheat the graphite crucible to 600°C, add pure copper, adjust t...

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Abstract

The invention relates to a copper steel duplex metal composite casting method, and belongs to the technical field of duplex metal casting. The copper steel duplex metal composite casting method comprises the steps of steel substrate pretreatment, steel substrate preheating, lead-tin bronze alloy smelting and casting. According to a duplex metal combination face obtained through the casting manner,performance can reaches the standard, the equipment input is less, process operation is easy and convenient, the workpeice cost is reduced, the copper steel duplex metal composite casting method is suitable for wide application and popularization, and the prospect is wide. Compared with powder metallurgy, the performance is more excellent, the heat treatment process is saved, and time and cost are saved.

Description

technical field [0001] The invention belongs to the technical field of bimetal casting, and in particular relates to a copper-steel bimetal composite casting method. Background technique [0002] Piston pump is a kind of transmission machinery widely used in production and an important device of hydraulic system. It relies on the reciprocating movement of the plunger in the cylinder to change the volume of the sealed working chamber to realize oil absorption and oil pressure. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency and convenient flow adjustment. It is widely used in high pressure, large flow and flow adjustment occasions, such as hydraulic presses, engineering machinery and transportation machinery. The plunger and the rotor form a friction pair during work, and its quality determines the performance and life of the plunger pump. Production requires that the plunger pump tends to operate at high speed, high temperatur...

Claims

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Application Information

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IPC IPC(8): B22D19/16C22C9/08C22C38/02C22C38/04C22C38/44C22C38/42C22C38/50C22C38/46
CPCB22D19/0081B22D19/16C22C9/08C22C38/002C22C38/02C22C38/04C22C38/42C22C38/44C22C38/46C22C38/50
Inventor 夏建强常峰
Owner 安徽恒利增材制造科技有限公司
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