A high-precision valve core and its preparation method and application

A high-precision, valve core technology, applied in valve devices, manufacturing tools, mechanical equipment, etc., can solve the problems of high scrap rate, easy damage to assembly gaps, and high manufacturing costs, reducing scrap rate, overcoming easy damage, and reducing manufacturing costs. production cost effect

Active Publication Date: 2022-02-15
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

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  • A high-precision valve core and its preparation method and application

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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 present invention discloses a high-precision valve core and its preparation method and application. The preparation method of the high-precision valve core includes step 1, cutting off excess material on the surface of the raw material; step 2, decomposing the carburizing medium into The active carbon atoms infiltrated into the surface layer of raw materials; Step 3, using gun drills to carry out deep hole processing on the workpiece processed in Step 2; Step 4, further processing the workpiece after deep hole processing; Step 5, processing the workpiece in Step 4 according to the milling machine Workpiece processing, high-frequency induction heating and quenching is used for the connection between the valve core shell and the connecting rod; step 6, boring the workpiece processed in step 5; step 7, grinding the bored workpiece. The preparation method of the high-precision valve core provided by the present invention uses high-frequency induction heating and quenching at the junction of the valve core shell and the connecting rod, without damaging the valve core shell, the product strength is improved, and the assembly of two valve core shells is overcome. The problem that the gap is easily damaged, thereby reducing the scrap rate.

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 Patents(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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