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A valve processing method

A processing method and valve technology, which is applied in the field of valve processing, can solve the problems of wasting end cap processing time and affecting the production efficiency of valves, and achieve the effect of improving processing efficiency

Active Publication Date: 2020-08-21
YUHUAN DAZHONG COPPER MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the processing of the valve end cap, a drill bit is required to drill several threaded holes on the valve end cap. The general threaded hole processing needs to go through two steps, that is, drilling first and then tapping, to make a complete threaded hole. At present, when processing the valve end cap, the through hole is usually drilled on the end cap first, and then the end cap with the through hole is taken out for tapping processing. The processing of the end cap needs to be completed on two equipments. Handling also wastes the processing time of the end cap and affects the production efficiency of the valve

Method used

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  • A valve processing method

Examples

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Embodiment 1

[0031] A valve processing method, including: a, valve body manufacturing: testing purchased castings, using ultrasonic waves for flaw detection, performing surfacing and post-weld heat treatment on qualified castings, and grinding the sealing surface of the castings; b, valve interior Parts manufacturing process: inspect the purchased raw materials, make the raw materials into blanks, then perform ultrasonic flaw detection on the blanks, perform surfacing welding and post-weld heat treatment on qualified blanks, and grind the sealing surface of the blanks; c. End cover processing: The blanks in step b include end cap blanks, put the end caps on the punching device, punch threaded holes on the end caps, and complete the processing of the end caps; d, fastener manufacturing: test the purchased raw materials, Make raw materials into blanks and take samples for necessary inspections, and then do spectral inspections after rough processing and fine processing; e. General assembly: A...

Embodiment 2

[0049] A valve processing method, including: a, valve body manufacturing: testing purchased castings, using ultrasonic waves for flaw detection, performing surfacing and post-weld heat treatment on qualified castings, and grinding the sealing surface of the castings; b, valve interior Parts manufacturing process: inspect the purchased raw materials, make the raw materials into blanks, then perform ultrasonic flaw detection on the blanks, perform surfacing welding and post-weld heat treatment on qualified blanks, and grind the sealing surface of the blanks; c. End cover processing: The blanks in step b include end cap blanks, put the end caps on the punching device, punch threaded holes on the end caps, and complete the processing of the end caps; d, fastener manufacturing: test the purchased raw materials, Make raw materials into blanks and take samples for necessary inspections, and then do spectral inspections after rough processing and fine processing; e. General assembly: A...

Embodiment 3

[0051] A valve processing method, including: a, valve body manufacturing: testing purchased castings, using ultrasonic waves for flaw detection, performing surfacing and post-weld heat treatment on qualified castings, and grinding the sealing surface of the castings; b, valve interior Parts manufacturing process: inspect the purchased raw materials, make the raw materials into blanks, then perform ultrasonic flaw detection on the blanks, perform surfacing welding and post-weld heat treatment on qualified blanks, and grind the sealing surface of the blanks; c. End cover processing: The blanks in step b include end cap blanks, put the end caps on the punching device, punch threaded holes on the end caps, and complete the processing of the end caps; d, fastener manufacturing: test the purchased raw materials, Make raw materials into blanks and take samples for necessary inspections, and then do spectral inspections after rough processing and fine processing; e. General assembly: A...

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PUM

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Abstract

The invention discloses a valve machining method. The valve machining method comprises the following steps of a, valve body manufacturing, specifically, purchased castings are tested, the flaw detection is carried out by using the ultrasonic, the overlaying welding and post welding heat treatment of the qualified castings are carried out, and the sealing surfaces of the castings are ground; b, valve internals manufacturing process, specifically, purchased raw materials are detected, the raw materials are made into blanks, then, the ultrasonic flaw detection of the blanks is carried out, the overlaying welding and post welding heat treatment of the qualified blanks are carried out, and the sealing surfaces of the blanks are ground; c, end cover machining, specifically, the blanks in step Binclude end cover blanks, end covers are put on a drilling device, threaded holes are punched on the end covers, and the machining of the end covers is completed; d, fastener manufacturing; and e, final assembly, specifically, the rough assembly is carried out after production parts are cleaned, then, an assembled valve is subjected to hydrostatic test, after passing the test, the parts are disassembled and cleaned, then the parts are assembled together and debugged with an actuator, the valve surface is painted after debugging, and then the valve is packed for handling.

Description

technical field [0001] The invention belongs to the technical field of valve processing, and in particular relates to a valve processing method. Background technique [0002] The valve is a control component in the fluid delivery system, which has functions such as cut-off, adjustment, flow diversion, reverse flow prevention, pressure stabilization, flow diversion or overflow pressure relief. The valve is mainly composed of three parts: the valve body, the opening and closing member and the end cover. Among them, the end cover of the valve is mostly disc-shaped, and the valve end cover is provided with a number of radially evenly distributed threaded holes centered on the center of the valve end cover. , similar to a flange, which facilitates fixing the valve end cover to the valve body by bolts. During the processing of the valve end cap, a drill bit is required to drill several threaded holes on the valve end cap. The general threaded hole processing needs to go through t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
CPCB23P15/001
Inventor 董服义
Owner YUHUAN DAZHONG COPPER MFG CO LTD