Solution treatment technology for high-pressure stainless steel pump

A stainless steel pump, solution treatment technology, applied in heat treatment furnaces, heat treatment equipment, manufacturing tools, etc., to improve plasticity, improve work efficiency, save costs and time.

Inactive Publication Date: 2015-11-04
SUZHOU XINWEI VALVES
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is to provide a solid solution treatment process for high-pressure stainless steel pump bodies, which can solve the above-mentioned shortcomings existing in the preparation of high-pressure stainless steel pump bodies by existing martensitic stainless steel materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Select high-quality martensitic stainless steel hot-rolled bar as the raw material of high-pressure stainless steel pump body, saw the material according to the theoretical weight, heat and forge at 1250-1500°C for 1.8-2.2 hours, and prepare a forging billet, and then immediately Send it into a solid melting furnace, rapidly raise the temperature to a solid solution temperature of 1040 °C at a rate of 90-150 °C / h, heat-preserve and solid solution for 3 hours, and immediately water-cool after leaving the furnace to complete the solid solution treatment.

[0016] Then the solid solution treated forging billet undergoes mechanical rough processing, natural aging, mechanical finishing and inspection of size, appearance, physical and chemical properties in sequence to become the high-pressure stainless steel pump body, which is packaged and put into storage. Among them, the allowance for mechanical rough machining is 1.5mm, and the natural aging time is 12h.

[0017] The adv...

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Abstract

The invention discloses a solution treatment technology for a high-pressure stainless steel pump. After a raw material of the high-pressure stainless steel pump is weighted and discharged, a forging blank is prepared through a hot forging process, then the forging blank is instantly fed into a solution furnace and quickly heated to a solution temperature, heat-preservation solution treatment is conducted for a period, the forging blank is subjected to water cold the moment being discharged out of the furnace, and solution treatment is finished. By means of the solution treatment technology for the high-pressure stainless steel pump, the plasticity, toughness and corrosion resistance of austenitic stainless steel are improved; meanwhile, stress is eliminated, and materials are softened, so that cost for subsequent machining is reduced, time for subsequent machining is shortened, and work efficiency is improved.

Description

technical field [0001] The invention relates to the field of export-type petroleum pipeline infrastructure, in particular to a solid solution treatment process for a high-pressure stainless steel pump body. Background technique [0002] High-pressure stainless steel pump bodies are widely used in military industry, oil and gas industry, chemical industry, medical equipment, biochemical technology and other high-end industries. There are very high requirements for the material selection, processing accuracy, pressure resistance and corrosion resistance of the pump body itself. At present, the domestic anti-corrosion metal material martensitic stainless steel cannot meet the overall requirements of the pump body in terms of toughness, plasticity and corrosion resistance. The size is easy to deform naturally during subsequent machining and forming, which is difficult to control, resulting in the impact on the precision and durability of the pump body. In addition, the material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/00C21D1/00
Inventor 袁江明王建强蔡晓华李杰
Owner SUZHOU XINWEI VALVES
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