CN103361565A - Ceramimetallurgical flange and manufacturing method thereof - Google Patents

Abstract

The invention discloses a ceramimetallurgical flange and a manufacturing method thereof. The ceramimetallurgical flange is characterized by being manufactured from the following raw materials in parts by weight: 95-99 parts of iron powder, 1.2-1.4 parts of chromium powder, 1.2-1.4 parts of graphite powder, 2.4-2.6 parts of zinc stearate, 2-2.4 parts of stearic acid, 0.2-0.3 part of Mo, 0.9-1.2 parts of V, 0.04-0.06 part of Ta, 0.8-1.2 parts of Zn, 0.5-0.55 part of Ni, 0.35-0.45 part of niobium diboride, 1.2-1.4 parts of ferroferric oxide, 0.24-0.36 part of graphene and 2-3 parts of dispersant. According to different requirements, the constitution of the materials is regulated, and the produced flange has high tensile strength and air tightness, and is uniform in structure and widely suitable for various environments.

Description

A kind of powder metallurgy flange and preparation method thereof

Technical field

The present invention relates to field of powder metallurgy, relate in particular to a kind of powder metallurgy flange and preparation method thereof.

Background technology

Powder metallurgy technology be with Materials science and metal forming technology perfect combine a kind of new technique because efficient, be widely used in various industries without machining, material-saving, energy-saving and environmental protection.

Powder metallurgy structural part product material composition is not limited by melting, both can add alloying constituent, can add other structural constituent yet, and adjusts as requested in sizable scope, and then can reach the effect of mating with steel part on mechanical property.

The powder metallurgy mechanization degree is high, can reduce personnel, can raise the efficiency again, and then save cost.Powder metallurgy technology can replace traditional manufacturing process, for the vast traditional forms of enterprises saves cost.

So study the prescription of the powder metallurgy of various components of machine, adapt to different needs, have great importance.

Summary of the invention

The purpose of this invention is to provide a kind of powder metallurgy flange and preparation method thereof.

Technical scheme of the present invention is as follows:

A kind of powder metallurgy flange is characterized in that being made by the raw material of following weight part:

Iron powder 95-99, chromium powder 1.2-1.4, Graphite Powder 99 1.2-1.4, Zinc Stearate 2.4-2.6, stearic acid 2-2.4, Mo0.2-0.3, V0.9-1.2, Ta0.04-0.06, Zn0.8-1.2, Ni0.5-0.55, niobium dioxide 0.35-0.45, Z 250 1.2-1.4, Graphene 0.24-0.36, dispersion agent 2-3.

Described dispersion agent is made by the raw material of following weight part: tripoly phosphate sodium STPP 2-3, glycerol glycerinate 1-2, linking agent TAC 1-2, Silane coupling agent KH550 2-3, aluminum nitride powder 1-2, boronation two molybdenum 0.3-0.5, microcrystalline wax 3-4, chitosan 1-2;

The preparation method is: with each mixing of materials, grinding distribution evenly gets final product.

The preparation method of described powder metallurgy flange is characterized in that may further comprise the steps:

(1) with each mixing of materials, after stirring 50-60 minute under 48-52 ℃, the mould of packing into is pressed into base;

(2) pressed compact is placed in the sintering oven, oxygen level is in the nitrogen atmosphere of 1-2%, is warming up under the 550-580 ℃ of condition sintering 2-3 hour with 6-8 ℃ of/minute clock rate; Be warming up under the 1050-1090 ℃ of condition sintering 3-4 hour with 10-12 ℃ of/minute clock rate again;

(3) pressed compact is sent in the steam treatment stove, in stove, passed into steam 40-50 minute under temperature 310-320 ℃ the condition; In stove, pass into steam 60-80 minute under temperature 510-520 ℃ the condition again;

(4) pressed compact is taken out, placed 2-3 hour after being cooled to room temperature, put into again under the stove 150-190 ℃ condition, be incubated 2-3 hour, taking-up and get final product.

The present invention's difference is as required adjusted the composition of material, and its tensile strength of the flange of production, the high weave construction of resistance to air loss are even, extensively are adapted to each environment.

Embodiment

A kind of powder metallurgy flange, made by the raw material (kilogram) of following weight part:

Iron powder 95, chromium powder 1.4, Graphite Powder 99 1.2, Zinc Stearate 2.4, stearic acid 2, Mo0.3, V1.2, Ta0.06, Zn0.8, Ni0.5, niobium dioxide 0.45, Z 250 1.4, Graphene 0.36, dispersion agent 3.

Described dispersion agent is made by the raw material of following weight part: tripoly phosphate sodium STPP 3, glycerol glycerinate 1, linking agent TAC 2, Silane coupling agent KH550 3, aluminum nitride powder 2, boronation two molybdenums 0.5, microcrystalline wax 4, chitosan 2;

The preparation method is: with each mixing of materials, grinding distribution evenly gets final product.

The preparation method of powder metallurgy flange may further comprise the steps:

(1) with each mixing of materials, after stirring 50-60 minute under 48-52 ℃, the mould of packing into is pressed into base;

(2) pressed compact is placed in the sintering oven, oxygen level is in the nitrogen atmosphere of 1-2%, is warming up under the 550-580 ℃ of condition sintering 2-3 hour with 6-8 ℃ of/minute clock rate; Be warming up under the 1050-1090 ℃ of condition sintering 3-4 hour with 10-12 ℃ of/minute clock rate again;

(3) pressed compact is sent in the steam treatment stove, in stove, passed into steam 40-50 minute under temperature 310-320 ℃ the condition; In stove, pass into steam 60-80 minute under temperature 510-520 ℃ the condition again;

(4) pressed compact is taken out, placed 2-3 hour after being cooled to room temperature, put into again under the stove 150-190 ℃ condition, be incubated 2-3 hour, taking-up and get final product.

Through detecting the heat treatment hardness of flange of the present invention: HRC59; Tensile strength: 880MPa.

Claims (2)

1. powder metallurgy flange is characterized in that being made by the raw material of following weight part:

Iron powder 95-99, chromium powder 1.2-1.4, Graphite Powder 99 1.2-1.4, Zinc Stearate 2.4-2.6, stearic acid 2-2.4, Mo0.2-0.3, V0.9-1.2, Ta0.04-0.06, Zn0.8-1.2, Ni0.5-0.55, niobium dioxide 0.35-0.45, Z 250 1.2-1.4, Graphene 0.24-0.36, dispersion agent 2-3;

Described dispersion agent is made by the raw material of following weight part: tripoly phosphate sodium STPP 2-3, glycerol glycerinate 1-2, linking agent TAC 1-2, Silane coupling agent KH550 2-3, aluminum nitride powder 1-2, boronation two molybdenum 0.3-0.5, microcrystalline wax 3-4, chitosan 1-2; The preparation method is: with each mixing of materials, grinding distribution evenly gets final product.

2. the preparation method of powder metallurgy flange according to claim 1 is characterized in that may further comprise the steps:

(1) with each mixing of materials, after stirring 50-60 minute under 48-52 ℃, the mould of packing into is pressed into base;

(2) pressed compact is placed in the sintering oven, oxygen level is in the nitrogen atmosphere of 1-2%, is warming up under the 550-580 ℃ of condition sintering 2-3 hour with 6-8 ℃ of/minute clock rate; Be warming up under the 1050-1090 ℃ of condition sintering 3-4 hour with 10-12 ℃ of/minute clock rate again;

(3) pressed compact is sent in the steam treatment stove, in stove, passed into steam 40-50 minute under temperature 310-320 ℃ the condition; In stove, pass into steam 60-80 minute under temperature 510-520 ℃ the condition again;

(4) pressed compact is taken out, placed 2-3 hour after being cooled to room temperature, put into again under the stove 150-190 ℃ condition,

Be incubated 2-3 hour, take out and get final product.