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Screw machining process for industrial oil pumps

A processing technology and screw technology, which is applied in the field of screw processing technology of industrial oil pumps, can solve the problems of tensile and bending resistant industrial oil pump screw processing difficulties, etc., and achieve the effect of good tensile resistance, no deformation of performance and high hardness

Active Publication Date: 2016-04-20
石台县熠翔机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the problem of difficulty in processing the screw rod of the industrial oil pump with the properties of tensile strength, bending resistance and fatigue resistance, and provides a screw processing technology for industrial oil pumps

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A screw processing technology for industrial oil pumps, comprising the following steps:

[0028] S1. Material selection: The screw is the key part of the oil pump. The working environment is high-speed, high-pressure, and high-temperature rotation. The screw to be selected must have good tensile, bending, and fatigue resistance. It must not only have high hardness and wear resistance but also toughness. Good; the alloy structural steel is 40Cr, the diameter is 100mm, and the length is 2300mm.

[0029] S2. Quenching and tempering treatment: pre-heat-treat the screw in step S1, first quench and then add high-temperature tempering, which can improve the surface hardness and core performance and improve cutting performance; the high-temperature tempering temperature is controlled within the range of 400-500°C The fire time is 5-7 hours. After the screw is quenched, the quenching liquid is used for cooling.

[0030] S3. End face milling: put the screw rod quenched and temp...

Embodiment 2

[0037] A screw processing technology for industrial oil pumps, comprising the following steps:

[0038] S1. Material selection: The screw is the key part of the oil pump. The working environment is high-speed, high-pressure, and high-temperature rotation. The screw to be selected must have good tensile, bending, and fatigue resistance. It must not only have high hardness and wear resistance but also toughness. Good; the alloy structural steel is 40Cr, the diameter is 100mm, and the length is 2300mm.

[0039] S2. Quenching and tempering treatment: pre-heat-treat the screw in step S1, first quench and then add high-temperature tempering, which can improve the surface hardness and core performance and improve cutting performance; the high-temperature tempering temperature is controlled within the range of 400-500°C The fire time is 5-7 hours. After the screw is quenched, diesel oil is used for cooling.

[0040] S3. End face milling: put the screw rod quenched and tempered in st...

Embodiment 3

[0046] A screw processing technology for industrial oil pumps, comprising the following steps:

[0047] S1. Material selection: The screw is the key part of the oil pump. The working environment is high-speed, high-pressure, and high-temperature rotation. The screw to be selected must have good tensile, bending, and fatigue resistance. It must not only have high hardness and wear resistance but also toughness. Good; the alloy structural steel is 38CrMnAl, with a diameter of 100mm and a length of 2300mm.

[0048] S2. Quenching and tempering treatment: pre-heat-treat the screw in step S1, first quench and then add high-temperature tempering, which can improve the surface hardness and core performance and improve cutting performance; the high-temperature tempering temperature is controlled within the range of 400-500°C The fire time is 5-7 hours. After the screw is quenched, diesel oil or quenching liquid is used for cooling.

[0049] S3. End face milling: put the screw rod que...

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Abstract

The invention discloses a screw machining process for industrial oil pumps, and relates to the technical field of machining of industrial oil pumps. The screw machining process comprises the following steps of material selecting, thermal refining, end surface milling, central hole drilling, external circle rough turning, external circle finish turning, spiral groove milling and qualitative processing. According to the screw machining process for industrial oil pumps, a simple and effective screw machining method for industrial oil pumps is provided; structural alloy steel 40Cr or 38CrMnAl is adopted as a raw material for screws, so that the screws have high tensile strength, bending resistance and fatigue resistance, and the screws are high in rigidity and good in tenacity, and are wear-resistant; by adopting the thermal refining step, the screws are subjected to high-temperature tempering after being quenched, so that the surface hardness and the core part performance of the screws are improved, and the machinability is improved; and the screws are subjected to qualitative processing, so that internal stress generated during the precise machining process of the screws and the residual stress of the material are eliminated, and the screws are high in strength, high in hardness and stable in performance, and do not deform.

Description

technical field [0001] The invention relates to the technical field of industrial oil pump processing, in particular to a screw processing technology for industrial oil pumps. Background technique [0002] The industrial oil pump is a rotary pump that relies on the volume change and movement of the meshing space formed by the pump body and the screw to deliver or pressurize the liquid. Industrial oil pumps are divided into single-screw pumps, twin-screw pumps and three-screw pumps according to the number of screws. The working principle of the industrial oil pump is similar to that of the gear pump, except that the gear is replaced by a screw in structure. The flow rate and pressure pulse of industrial oil pumps are very small, the noise and vibration are small, and they have self-priming ability, so industrial oil pumps are widely used. [0003] The screw is the main and key part of an industrial oil pump. The working environment is high-speed, high-pressure, high-tempera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
Inventor 卞江辉储庆林陈满宝李旭强
Owner 石台县熠翔机械制造有限公司
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