High-precision valve element and preparation method and application thereof

A high-precision, spool technology, applied in the direction of valve devices, mechanical equipment, manufacturing tools, etc., can solve the problems of high manufacturing cost, easy damage of assembly gap, high scrap rate, etc., to reduce manufacturing cost, overcome easy damage, reduce The effect of scrap rate

Active Publication Date: 2020-06-26
WUXI YINGBEI PRECISION BEARING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For this reason, the embodiment of the present invention provides a high-precision valve core and its preparation method and application to solve the problems of high manufacturing cost, easy damage to the assembly gap and high scrap rate in the multi-way valve assembly process in the prior art

Method used

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  • High-precision valve element and preparation method and application thereof

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Embodiment 1

[0032] This embodiment provides a method for preparing a high-precision valve core, including the following steps:

[0033] Step 1. Select the raw material, cut off the excess material on the surface of the raw material, and set aside;

[0034] Step 2. Put the raw material processed in Step 1 into an active carburizing medium, and then heat it to 930° C. until the activated carbon atoms decomposed in the carburizing medium penetrate into the surface layer of the steel piece to obtain the workpiece;

[0035] Step 3, using a gun drill to perform deep hole processing on the workpiece processed in step 2;

[0036] Step 4, further processing the workpiece after deep hole processing, so that the workpiece meets the product requirements;

[0037] Step 5. Process the workpiece processed in step 4 according to the milling machine to obtain valve core parts. The valve core parts include a valve core housing and a connecting rod arranged at the end of the valve core housing. The valve c...

Embodiment 2

[0043] This embodiment provides a method for preparing a high-precision valve core, including the following steps:

[0044] Step 1. Select the raw material, cut off the excess material on the surface of the raw material, and set aside;

[0045] Step 2. Put the raw material treated in step 1 into an active carburizing medium, and then heat it to 960° C. until the activated carbon atoms decomposed in the carburizing medium penetrate into the surface layer of the steel piece to obtain the workpiece;

[0046] Step 3, using a gun drill to perform deep hole processing on the workpiece processed in step 2;

[0047] Step 4, further processing the workpiece after deep hole processing, so that the workpiece meets the product requirements;

[0048] Step 5. Process the workpiece processed in step 4 according to the milling machine to obtain valve core parts. The valve core parts include a valve core housing and a connecting rod arranged at the end of the valve core housing. The valve cor...

Embodiment 3

[0055] This embodiment provides a method for preparing a high-precision valve core, including the following steps:

[0056] Step 1. Select the raw material, cut off the excess material on the surface of the raw material, and set aside;

[0057] Step 2. Put the raw material processed in step 1 into an active carburizing medium, and then heat it to 945° C. until the activated carbon atoms decomposed in the carburizing medium penetrate into the surface layer of the steel piece to obtain the workpiece;

[0058] Step 3, using a gun drill to perform deep hole processing on the workpiece processed in step 2;

[0059] Step 4, further processing the workpiece after deep hole processing, so that the workpiece meets the product requirements;

[0060] Step 5. Process the workpiece processed in step 4 according to the milling machine to obtain valve core parts. The valve core parts include a valve core housing and a connecting rod arranged at the end of the valve core housing. The valve cor...

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Abstract

The embodiment of the invention discloses a high-precision valve element and a preparation method and application thereof. The preparation method of the high-precision valve element comprises the following steps of 1, cutting away excess materials on the surface of raw materials; 2, enabling activated carbon atoms decomposed in a carburizing medium to penetrate into the surface layer of the raw materials; 3, performing deep hole machining on the workpiece treated in the step 2 by using a gun drill; 4, further machining the workpiece subjected to deep hole machining; 5, machining the workpiecetreated in the step 4 according to a milling machine, and quenching the joint of a valve element shell and a connecting rod by high-frequency induction heating; 6, boring the workpiece treated in thestep 5; and 7, polishing the bored workpiece. According to the preparation method of the high-precision valve element, the joint of the valve element shell and the connecting rod is quenched by high-frequency induction heating, the product strength is improved under the condition that the valve element shell is not damaged, the problem that the assembly gap between two valve element shells is likely to damage is solved, and therefore the rejection rate is reduced.

Description

technical field [0001] The invention relates to the field of engineering hydraulic equipment, in particular to a high-precision valve core and its preparation method and application. Background technique [0002] When engineering hydraulic equipment is working, it is necessary to control the flow of hydraulic oil to ensure the effective and long-lasting operation of the operating part of the equipment. The deep hole spool moves back and forth at high speed in the valve body, and controls the flow of hydraulic oil between two or more valve chambers through its axial hole and radial hole, so the spool plays a key role in the operation of the entire equipment. [0003] In the assembly process of multi-way valves, at least two components are often required to be assembled into a spool structure. At present, this type of spool has the problems of high manufacturing cost, easy damage to the assembly gap, and high scrap rate. Contents of the invention [0004] Therefore, the emb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00C23C8/22C23C8/46C23C8/66C21D1/42C21D1/58F16K51/00
CPCB23P15/001C23C8/22C23C8/46C23C8/66C21D1/42C21D1/58F16K51/00Y02P10/20Y02P10/25
Inventor 余辉
Owner WUXI YINGBEI PRECISION BEARING
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