Copper-steel double-metal composite casting method for plunger pump rotor

A composite casting, plunger pump technology, applied in the direction of metal material coating process, coating, hot dip plating process, etc., can solve the constraints on the production and application of bimetal composite casting materials, short metal contact time, fast cooling speed, etc. problems, to achieve reasonable casting process parameters, improved composite ability, good corrosion resistance and wear resistance.

Inactive Publication Date: 2018-03-13
安徽恒利增材制造科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

[0031] 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.

[0032] A copper-steel bimetal composite casting method for a plunger pump rotor, comprising the following steps:

[0033] Step 1: Turning, milling, planing, grinding, drilling, and boring the steel substrate. The steel substrate is a cylinder. A central hole is provided in the center of the steel substrate, and 9 circular holes are arranged around the central hole. With a metal type lower cover;

[0034] Step 2: Put the steel matrix in an aqueous solution of sodium oxide with a mass concentration of 10%, soak it at 50°C for 20 minutes, perform degreasing treatment, wash with water until neutral, and then pickle the surface of the ste...

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Abstract

The invention discloses a copper-steel double-metal composite casting method for a plunger pump rotor and belongs to the technical field of double-metal casting. The method includes steps of machiningof a steel base body, pretreatment of the steel base body, performing of a heat treatment annealing technology on the steel base body, Ni-Cu-P multi-element nickel plating treatment of the inner surface of the steel base body, flux treatment, preheating of the steel base body, smelting of a lead tin bronze alloy, performing of a hot dipping technology, casting and machining, and the plunger pumprotor is prepared. The performance of the double-metal combined surface obtained in the casting manner reaches the standards, the equipment input is low, the technologies are simple and convenient tooperate, the workpiece cost is reduced, and the method is suitable for wide popularization and application and has the broad prospect. Compared with the powder metallurgy method, the method has the advantages as follows: the performance is more excellent, the heat treatment procedure is omitted, the time is saved, and the cost is reduced.

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 for a plunger pump rotor. 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 hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/16B22D19/08C22C38/42C22C38/44C22C38/46C22C38/50C22C38/02C22C38/04C23C2/04
CPCB22D19/0081B22D19/08B22D19/16C22C38/02C22C38/04C22C38/42C22C38/44C22C38/46C22C38/50C23C2/04
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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