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A method for compounding two kinds of copper alloys on the blank of plunger pump cylinder

A technology of copper alloy and plunger pump, which is applied in the direction of cylinders, pistons, engine components, etc., to achieve the effects of reducing pores, avoiding uneven distribution, and increasing nucleation rate

Active Publication Date: 2016-09-21
贵州鼎成熔鑫科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: aiming at the problem that the current hydraulic plunger pump cylinder composite copper alloy technology can only composite one copper alloy, it provides a composite copper alloy that can composite different copper alloys on different working surfaces of the plunger pump cylinder. alloy method

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  • A method for compounding two kinds of copper alloys on the blank of plunger pump cylinder

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Embodiment Construction

[0032] As shown in the figure, there is a spherical concave surface 3 in the center of the top of the hydraulic plunger pump cylinder blank 1, and a circle of cylindrical cylinder holes 2 is arranged inside the blank 1, a total of 7, and there is a gap between the cylinder hole 2 and the spherical concave surface 3. The connecting channel, the connecting channel is a vertical stepped hole, designed with a dividing plate 6, which can be installed in the stepped hole.

[0033] Before compounding, a diversion groove 4 is first installed at the bottom of the blank 1, and the diversion groove 4 can connect the bottoms of the seven cylinder holes 2 into a cavity. Seven mandrels 5 are installed on the diversion groove 4, and the core The upper end of the rod 5 is inserted in the hole 2 of the cylinder body.

[0034] The composite steps are as follows:

[0035] 1. Use absolute ethanol as a cleaning agent to clean the casting surface of the blank 1, and then apply or place a metal act...

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Abstract

The invention discloses a method for compounding two types of copper alloy on a plunger pump cylinder blank. The method includes the following steps: 1 cleaning the surface to be cast and conducting activation and forming a diversion groove (4) in the bottom of a blank (1); 2 preheating; 3 melting a first type of copper alloy and pouring the first type of copper alloy into a cylinder hole (2) of the blank (1); 4 standing in a thermal insulation mode, placing a partition plate (6) and adjusting a temperature control device to enable the temperature at the lower end of the blank (1) in a furnace to be 5-15 DEG C lower than that of the upper end; 5 placing a second type of copper alloy in the spherical recessed face (3) of the blank (1), melting the second type of copper alloy and standing in a thermal insulation mode after the copper alloy is completely molten; 6 cooling and discharging. By means of the method, different copper alloys can be compounded on two different working faces of a plunger pump cylinder, the performance of the plunger pump is improved, and the service life is prolonged.

Description

technical field [0001] The invention relates to a processing method for a cylinder body of a plunger pump, in particular to a method for compounding copper alloy in the cylinder body of a plunger pump. Background technique [0002] Among the existing hydraulic components of construction machinery, many high-end products involve the composite technology of copper alloy and steel material. This composite is not a simple mechanical bonding, but a metallurgical combination between the two materials. Interpenetration and metallurgical reactions between atoms occur at the interface of the two materials, so there are high technical requirements for the composite process. For example, the common hydraulic plunger pump cylinder, in order to solve the friction pair matching problem between the cylinder and the plunger, oil distribution plate and other parts during use, the cylinder is a composite component made of steel matrix and copper alloy, and its composite surface includes Plan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D19/16
CPCB22D19/0009B22D19/16
Inventor 殷汝新赖朝宏周邦华
Owner 贵州鼎成熔鑫科技有限公司
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