CN103357864A - Iron-based powder metallurgy material applicable to high-speed boring and preparation method thereof - Google Patents

Abstract

The invention discloses an iron-based powder metallurgy material applicable to high-speed boring and a preparation method thereof. The iron-based powder metallurgy material applicable to the high-speed boring is characterized by being prepared from the following raw materials in part by weight: 99-102 parts of iron powder, 2.3-2.5 parts of copper powder, 1.2-1.4 parts of molybdenum disulfide, 0.4-0.6 parts of calcium fluoride, 0.6-0.9 parts of magnesium oxide, 0.3-0.4 parts of graphite, 0.12-0.15 parts of In, 0.15-0.18 parts of As, 0.02-0.04 parts of Sb, 0.4-0.6 parts of V2O5, 0.3-0.5 parts of CuO, 1.2-1.4 parts of tantalum carbide, 0.3-0.4 parts of niobium carbide, 0.5-0.7 parts of tungsten boride and 2-3 parts of dispersing agent. The preparation method is simple and feasible; the prepared iron-based powder metallurgy material has good high-speed finishing and mechanical properties and can meet using requirements of a conventional high-speed boring machine on the quality of a machining surface and a tool.

Description

A kind of Properties of Powder Metallurgy Iron-based Material that is applicable to high speed boring processing and preparation method thereof

Technical field

The present invention relates to field of powder metallurgy, relate in particular to a kind of Properties of Powder Metallurgy Iron-based Material that is applicable to high speed boring processing and preparation method thereof.

Background technology

PM technique be with material 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 component, 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.PM technique 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 Properties of Powder Metallurgy Iron-based Material that is applicable to high speed boring processing and preparation method thereof.

Technical scheme of the present invention is as follows:

A kind of Properties of Powder Metallurgy Iron-based Material that is applicable to high speed boring processing is characterized in that being made by the raw material of following weight portion: iron powder 99-102, copper powder 2.3-2.5, molybdenum bisuphide 1.2-1.4, calcirm-fluoride 0.4-0.6, magnesia 0.6-0.9, graphite 0.3-0.4, In0.12-0.15, As0.15-0.18, Sb0.02-0.04, V ₂O ₅0.4-0.6, CuO0.3-0.5, ramet 1.2-1.4, niobium carbide 0.3-0.4, tungsten boride 0.5-0.7, dispersant 2-3.

Described dispersant is made by the raw material of following weight portion: sodium phosphate trimer 2-3, glycerine glycerinate 1-2, crosslinking 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, shitosan 1-2;

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

The described preparation method who is applicable to the Properties of Powder Metallurgy Iron-based Material of high speed boring processing is characterized in that may further comprise the steps:

(1) with each mixing of materials, after stirring 50-70 minute under 53-56 ℃, the mould of packing into is pressed into base;

(2) pressed compact being placed in the sintering furnace, is under the nitrogen atmosphere protection of 0.3-0.4% in oxygen content, is warming up under the 420-460 ℃ of condition sintering 2-3 hour with 6-8 ℃ of/minute clock rate; Be warming up under the 720-760 ℃ of condition sintering 1-2 hour with 8-12 ℃ of/minute clock rate again; Be warming up under the 1020-1090 ℃ of condition sintering 2-3 hour with 16-19 ℃ of/minute clock rate; Be cooled under the 380-450 ℃ of condition with 8-10 ℃ of/minute clock rate again and be incubated 2-3 hour;

(3) pressed compact is sent in the steam treatment stove, in stove, passed into steam 60-90 minute under temperature 320-380 ℃ the condition; In stove, pass into steam 30-40 minute under temperature 550-580 ℃ the condition again;

(4) pressed compact is put under the 250-290 ℃ of condition, be incubated 2-3 hour, take out air cooling and get final product.

Preparation method's simple possible of the present invention, the Properties of Powder Metallurgy Iron-based Material of preparation have good High speed finish machining performance and mechanical property, and its material that makes can satisfy existing high speed boring machine tool to the instructions for use of machined surface quality and cutter.

The specific embodiment

A kind of Properties of Powder Metallurgy Iron-based Material that is applicable to high speed boring processing is made by the raw material (kilogram) of following weight portion: iron powder 102, copper powder 2.5, molybdenum bisuphide 1.4, calcirm-fluoride 0.6, magnesia 0.9, graphite 0.4, In0.12, As0.15, Sb0.02, V ₂O ₅0.4, CuO 0.3, ramet 1.4, niobium carbide 0.4, tungsten boride 0.7, dispersant 2.

Described dispersant is made by the raw material of following weight portion: sodium phosphate trimer 3, glycerine glycerinate 1, crosslinking agent TAC 2, Silane coupling agent KH550 3, aluminum nitride powder 2, boronation two molybdenums 0.5, microcrystalline wax 4, shitosan 2;

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

Be applicable to the preparation method of the Properties of Powder Metallurgy Iron-based Material of high speed boring processing, may further comprise the steps:

(1) with each mixing of materials, after stirring 50-70 minute under 53-56 ℃, the mould of packing into is pressed into base;

(2) pressed compact being placed in the sintering furnace, is under the nitrogen atmosphere protection of 0.3-0.4% in oxygen content, is warming up under the 420-460 ℃ of condition sintering 2-3 hour with 6-8 ℃ of/minute clock rate; Be warming up under the 720-760 ℃ of condition sintering 1-2 hour with 8-12 ℃ of/minute clock rate again; Be warming up under the 1020-1090 ℃ of condition sintering 2-3 hour with 16-19 ℃ of/minute clock rate; Be cooled under the 380-450 ℃ of condition with 8-10 ℃ of/minute clock rate again and be incubated 2-3 hour;

(3) pressed compact is sent in the steam treatment stove, in stove, passed into steam 60-90 minute under temperature 320-380 ℃ the condition; In stove, pass into steam 30-40 minute under temperature 550-580 ℃ the condition again;

(4) pressed compact is put under the 250-290 ℃ of condition, be incubated 2-3 hour, take out air cooling and get final product.

Through detecting the heat treatment hardness of flange of the present invention: HRC56; Tensile strength: 980MPa.

Claims (2)

1. one kind is applicable to the Properties of Powder Metallurgy Iron-based Material that the high speed boring is processed, and it is characterized in that being made by the raw material of following weight portion:

Iron powder 99-102, copper powder 2.3-2.5, molybdenum bisuphide 1.2-1.4, calcirm-fluoride 0.4-0.6, magnesia 0.6-0.9, graphite 0.3-0.4, In0.12-0.15, As0.15-0.18, Sb0.02-0.04, V ₂O ₅0.4-0.6, CuO0.3-0.5, ramet 1.2-1.4, niobium carbide 0.3-0.4, tungsten boride 0.5-0.7, dispersant 2-3;

Described dispersant is made by the raw material of following weight portion: sodium phosphate trimer 2-3, glycerine glycerinate 1-2, crosslinking 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, shitosan 1-2;

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

2. the preparation method who is applicable to the Properties of Powder Metallurgy Iron-based Material of high speed boring processing according to claim 1 is characterized in that may further comprise the steps:

(1) with each mixing of materials, after stirring 50-70 minute under 53-56 ℃, the mould of packing into is pressed into base;

(2) pressed compact being placed in the sintering furnace, is under the nitrogen atmosphere protection of 0.3-0.4% in oxygen content, is warming up under the 420-460 ℃ of condition sintering 2-3 hour with 6-8 ℃ of/minute clock rate; Be warming up under the 720-760 ℃ of condition sintering 1-2 hour with 8-12 ℃ of/minute clock rate again; Be warming up under the 1020-1090 ℃ of condition sintering 2-3 hour with 16-19 ℃ of/minute clock rate; Be cooled under the 380-450 ℃ of condition with 8-10 ℃ of/minute clock rate again and be incubated 2-3 hour;

(3) pressed compact is sent in the steam treatment stove, in stove, passed into steam 60-90 minute under temperature 320-380 ℃ the condition; In stove, pass into steam 30-40 minute under temperature 550-580 ℃ the condition again;

(4) pressed compact is put under the 250-290 ℃ of condition, be incubated 2-3 hour, take out air cooling and get final product.