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Powder metallurgy formula and manufacturing process of stator and rotor pair of full hydraulic steering gear

Active Publication Date: 2016-01-20
ANHUI HENGJUN POWDER METALLURGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has the disadvantages of fixed material composition, poor wear resistance, low processing efficiency, low material utilization rate, low processing precision, poor anti-rust performance, etc., and cannot meet market requirements.

Method used

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  • Powder metallurgy formula and manufacturing process of stator and rotor pair of full hydraulic steering gear

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) stir powder

[0028] According to the specific properties required by the product, various metal and non-metal elements are purposely added to make the finished product achieve the expected mechanical properties. The product requires high dimensional accuracy, good toughness, good dimensional stability, strong wear resistance, and good rust resistance. The formula we use is: 94.5% atomized iron powder, 0.6% colloidal graphite, 1% electrolytic copper, 1.7% nickel powder, 0.5% molybdenum powder, 0.4% chromium powder, 0.6% manganese sulfide, 0.7% micronized wax and 5ml spindle Oil / 100 kg.

[0029] Accurately weigh the raw materials and pour them into a special powder mixer to stir for 30-60 minutes. After pouring out and cooling for 1 hour, the next process can be carried out.

[0030] (2) Compression molding

[0031] The designed stator 2 pressing mold is installed on a 300-ton powder metallurgy mechanical press, and then the stirred raw materials are loaded into t...

Embodiment 2

[0046] (1) stir powder

[0047] According to the specific properties required by the product, various metal and non-metal elements are purposely added to make the finished product achieve the expected mechanical properties. The product requires high dimensional accuracy, good toughness, good dimensional stability, strong wear resistance, and good rust resistance. The formula we use is: 90.5% atomized iron powder, 1.2% colloidal graphite, 2.6% electrolytic copper, 2.0% nickel powder, 2.0% molybdenum powder, 0.5% chromium powder, 0.5% manganese sulfide, 0.7% micronized wax and 30ml spindle Oil / 100 kg.

[0048] Accurately weigh the raw materials and pour them into a special powder mixer to stir for 30-60 minutes. After pouring out and cooling for 1 hour, the next process can be carried out.

[0049] (2) Compression molding

[0050] The designed stator pressing mold is installed on a 300-ton powder metallurgy mechanical press, and then the stirred raw materials are loaded into ...

Embodiment 3

[0065] (1) stir powder

[0066] According to the specific properties required by the product, various metal and non-metal elements are purposely added to make the finished product achieve the expected mechanical properties. The product requires high dimensional accuracy, good toughness, good dimensional stability, strong wear resistance, and good rust resistance. The formula we use is: 92.7% atomized iron powder, 0.7% colloidal graphite, 4% electrolytic copper, 0.8% nickel powder, 1.2% molybdenum powder, 0.2% chromium powder, 0.1% manganese sulfide, 0.3% micronized wax and 20ml spindle Oil / 100 kg.

[0067] Accurately weigh the raw materials and pour them into a special powder mixer to stir for 30-60 minutes. After pouring out and cooling for 1 hour, the next process can be carried out.

[0068] (2) Compression molding

[0069] The designed stator pressing mold is installed on a 300-ton powder metallurgy mechanical press, and then the stirred raw materials are loaded into th...

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Abstract

The invention discloses a powder metallurgy formula of a full-hydraulic steering gear stator and rotor pair. The powder metallurgy formula is characterized in that the powder metallurgy formula comprises, by weight, 90.5% to 94.5% of atomized iron powder, 0.6% to 1.2% of aquadag, 1.0% to 4.0% of electrolytic copper, 0.8% to 2.0% of nickel powder, 0.5% to 2.0% of molybdenum powder, 0.2% to 0.5% of chromium powder, 0.1% to 0.6% of manganese sulfide, 0.3% to 0.7% of micronized wax and balance spindle oil, wherein every 100kg of the powder metallurgy formula contains 5mL to 30mL of spindle oil. The invention further discloses a powder metallurgy manufacturing process of the full-hydraulic steering gear stator and rotor pair. The powder metallurgy manufacturing process includes the dosing step, the powder stirring step, the pressing and forming step, the sintering and alloying step, the shaping and shape correcting step, the machining step, the steam processing step and other steps. By means of the powder metallurgy formula and the manufacturing process, the effects of being scientific in material composition proportion, good in wear resistance, not prone to abrasion, high in machining efficiency, material utilization rate and machining accuracy, good in rust protection performance and the like are achieved, and the market requirements can be completely met.

Description

technical field [0001] The invention relates to a powder metallurgy formula, in particular to a powder metallurgy formula for a stator and rotor pair of a full hydraulic steering gear. The invention also relates to a powder metallurgy manufacturing process for a stator and rotor pair of a full hydraulic steering gear. The invention belongs to the technical field of powder metallurgy. Background technique [0002] The stator and rotor pair of the full hydraulic steering gear are used in automobile engines, and its shape and structure are as follows: figure 1 shown. The rotor and stator of the existing full hydraulic steering gear stator and rotor pair are usually made by steel machining. It has the disadvantages of fixed material composition, poor wear resistance, low processing efficiency, low material utilization rate, low processing precision, poor anti-rust performance, etc., and cannot meet market requirements. Contents of the invention [0003] In order to solve the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B22F3/16B22F3/24B22F5/00
Inventor 顾进文
Owner ANHUI HENGJUN POWDER METALLURGY TECH
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