CN104550913A - Corrosion-resistant iron-based powder metallurgy valve and preparation method thereof - Google Patents
Corrosion-resistant iron-based powder metallurgy valve and preparation method thereof Download PDFInfo
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- CN104550913A CN104550913A CN201410818945.4A CN201410818945A CN104550913A CN 104550913 A CN104550913 A CN 104550913A CN 201410818945 A CN201410818945 A CN 201410818945A CN 104550913 A CN104550913 A CN 104550913A
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Abstract
The invention discloses a corrosion-resistant iron-based powder metallurgy valve. The corrosion-resistant iron-based powder metallurgy valve is prepared from the following raw materials in parts by weight: 3-5 parts of hafnium boride, 4-6 parts of tantalum nitride, 1-2 parts of polymerization ferrophosphorus powder, 2-3 parts of copper powder, 0.4-0.8 part of boron stearate, 0.5-0.7 part of graphite, 6-9 parts of polycarbosilane, 10-15 parts of titanium powder, 3-5 parts of silicon-calcium-barium ally powder, 0.3-0.5 part of a silane coupling agent kh-550, 2-2.5 parts of ferrozirconium, a proper amount of 1% sodium carbonate solution, a proper amount of water, 0.4-0.6 part of zinc stearate, 2-3 parts of sodium hypophosphite, 0.3-0.4 part of polyethylene glycol, 20-25 parts of 2Mol/L copper sulfate solution, 2-3 parts of a wetting additive and 81-83 parts of iron powder. The valve material is uniform in structure, high in strength and high in tenacity; by adding hafnium boride, tantalum nitride and polymerization ferrophosphorus powder, the heat resistance, the abrasion resistance and the corrosion resistance of the valve are improved.
Description
Technical field
The present invention relates to powder metallurgical technology, particularly relate to a kind of corrosion resistant iron base powder metallurgy valve and preparation method thereof.
Background technology
Valve is in fluid system, is used for controlling the device of the direction of fluid, pressure, flow, is the medium in pipe arrangement and equipment (liquid, gas, powder) is flowed or stops and controlling the device of its flow.
Valve material therefor is a lot, and wherein powdered metallurgical material manufacture craft is simple, makes precision high, saved cost, but powder metallurgy exists a lot of problem.Such as common iron-base powder metallurgy material is heat-resisting, corrosion resistance is poor, and bearing is poor, and the mechanical properties such as intensity, hardness, resistance to impact are not high enough.
Metal has thermal shock resistance, the feature of good toughness, but metal is easily oxidized, and elevated temperature strength is not high.Ceramic material has high rigidity, good heat resistance, the feature such as corrosion-resistant.By metal and Ceramic bond, can obtain that hardness is large, elevated temperature strength is high, high temperature creep is good, the material of good thermal shock, many excellent properties such as anti-oxidant, corrosion-resistant, wear-resistant, make valve be more suitable for the change of environment, longer service life.But due to nonmetallic phase and Metal Phase poor compatibility, easily make composition occur segregation, structural homogenity is poor, intensity is uneven, occur piebald, running-in ability is poor, wears no resistance, larger pressure can not be born, heat declines seriously, and cracking resistance can be poor, and thermal fatigue resistance can be poor, reduce serviceability, shorten service life.
The performance of iron-base powder metallurgy material can be improved by feed change, the performance of material can also be improved by the compatibility improving nonmetallic phase and Metal Phase.
Summary of the invention
The object of the present invention is to provide a kind of corrosion resistant iron base powder metallurgy valve and preparation method thereof, this valve material even tissue, intensity is high, good toughness, heat resistance, wearability and good corrosion resistance.
Technical scheme of the present invention is as follows:
A kind of corrosion resistant iron base powder metallurgy valve, is characterized in that being made up of the raw material of following weight portion: hafnium boride 3-5, tantalum nitride 4-6, polymerization ferrophosphorus powder 1-2, copper powder 2-3, stearic acid boron 0.4-0.8, graphite 0.5-0.7, Polycarbosilane 6-9, titanium valve 10-15, calsibar alloy powder 3-5, silane coupler kh-550 0.3-0.5, ferrozirconium 2-2.5,1% sodium carbonate liquor is appropriate, water appropriate, zinc stearate 0.4-0.6, inferior sodium phosphate 2-3, polyethylene glycol 0.3-0.4,2Mol/L copper-bath 20-25, wetting aid 2-3, iron powder 81-83;
Described wetting aid is made up of the raw material of following weight portion: Ga1-2, P1-1.3, boron oxide 0.8-1.4, titanium 1.4-1.6, Mn 1.3-1.6, vanadium oxide 0.6-0.9, SnO0.3-0.5, Bi2O3 0.2-0.4, magnesium powder 0.6-0.9, NaF0.1-0.2, water 8-10, polyethylene glycol 0.1-0.2; Preparation method is: be added to the water by polyethylene glycol, add magnesium powder after stirring, be heated to 70-80 DEG C, stir 20-30 minute, ultrasonic disperse 3-4 minute, add P, vanadium oxide, boron oxide, titanium, SnO, Bi2O3, Mn again, under 7000-8000 rev/min, stir 10-15 minute, ultrasonic disperse 4-5 minute, spraying dry, mix with other residual components, be ground to granularity and be less than 5 μm, to obtain final product.
The preparation method of described corrosion resistant iron base powder metallurgy valve, is characterized in that comprising the following steps:
(1) by hafnium boride, tantalum nitride, the mixing of polymerization ferrophosphorus powder, add in 1% sodium carbonate liquor of 3-4 times of weight portion, be heated to 40-50 DEG C, stir 10-15 minute, filter, add the water washing of 3-4 times of weight portion, repeated washing 2-3 time, filter, obtain filter cake;
(2) mixed with wetting aid by filter cake, grinding 30-40 minute, adds the water of 4-5 times of weight portion, add silane coupler kh-550, stir 10-15 minute, be heated to 60-70 DEG C, then add the iron powder of copper powder, stearic acid boron, 0.8-1.2 weight portion, stir 30-40 minute, filter, spraying dry under an atmosphere of hydrogen, pulverize, cross 130 mesh sieves, obtain powder;
(3) powder that (2) step obtains is added in 2Mol/L copper-bath, add polyethylene glycol, inferior sodium phosphate, be heated to 60-70 DEG C, stirring reaction 1-2 hour, filter, be washed with water to neutrality, pass into hot hydrogen and dry, pulverize, obtain powder;
(4) powder that (3) step obtains is mixed with other residual components, ball milling, shaping, sintering, finished machined, to obtain final product.
Beneficial effect of the present invention
The manufacture craft of valve material of the present invention makes Metal Phase be wrapped in nonmetallic phase skin, increases wetability and the caking property of nonmetallic phase and Metal Phase, can prevent component segregation, makes material structure even, adds intensity and toughness; By adding hafnium boride, tantalum nitride, polymerization ferrophosphorus powder, add the heat resistance of valve, wearability and corrosion resistance; The wetting aid of the application of the invention, can increase the wettability of metal pair nonmetallic phase, increases fatigue strength and the toughness of valve.
Detailed description of the invention
A kind of corrosion resistant iron base powder metallurgy valve, is made up of the raw material of following weight portion (kilogram): hafnium boride 4, tantalum nitride 5, polymerization ferrophosphorus powder 1.5, copper powder 2.5, stearic acid boron 0.6, graphite 0.6, Polycarbosilane 7, titanium valve 13, calsibar alloy powder 4, silane coupler kh-550 0.4, ferrozirconium 2.3,1% sodium carbonate liquor is appropriate, water appropriate, zinc stearate 0.5, inferior sodium phosphate 2.5, polyethylene glycol 0.3,2Mol/L copper-bath 23, wetting aid 2.5, iron powder 82;
Described wetting aid is made up of the raw material of following weight portion (kilogram): Ga1.5, P1.2, boron oxide 1, titanium 1.5, Mn 1.5, vanadium oxide 0.7, SnO0.4, Bi2O3 0.3, magnesium powder 0.7, NaF0.1, water 9, polyethylene glycol 0.1; Preparation method is: be added to the water by polyethylene glycol, add magnesium powder after stirring, be heated to 75 DEG C, stir 25 minutes, ultrasonic disperse 3.5 minutes, add P, vanadium oxide, boron oxide, titanium, SnO, Bi2O3, Mn again, stir 13 minutes under 7500 revs/min, ultrasonic disperse 4.5 minutes, spraying dry, mix with other residual components, be ground to granularity and be less than 5 μm, to obtain final product.
The preparation method of described corrosion resistant iron base powder metallurgy valve, comprises the following steps:
(1) by hafnium boride, tantalum nitride, the mixing of polymerization ferrophosphorus powder, add in 1% sodium carbonate liquor of 3.5 times of weight portions, be heated to 45 DEG C, stir 13 minutes, filter, add the water washing of 3.5 times of weight portions, repeated washing 2 times, filter, obtain filter cake;
(2) filter cake is mixed with wetting aid, grind 35 minutes, add the water of 4.5 times of weight portions, add silane coupler kh-550, stir 13 minutes, be heated to 65 DEG C, then add the iron powder of copper powder, stearic acid boron, 1 weight portion, stir 35 minutes, filter, spraying dry under an atmosphere of hydrogen, pulverize, cross 130 mesh sieves, obtain powder;
(3) powder that (2) step obtains is added in 2Mol/L copper-bath, add polyethylene glycol, inferior sodium phosphate, be heated to 65 DEG C, stirring reaction 1.5 hours, filter, be washed with water to neutrality, pass into hot hydrogen and dry, pulverize, obtain powder;
(4) powder that (3) step obtains is mixed with other residual components, ball milling, shaping, sintering, finished machined, to obtain final product.
Experimental data:
The hardness HB of this embodiment valve material is 66 after tested, and density is 95.25%, voidage 9.42%, and fracture toughness is 15.7MPam
1/2, compression strength is 157MPa, and bending strength is 503MPa.
Claims (2)
1. a corrosion resistant iron base powder metallurgy valve, is characterized in that being made up of the raw material of following weight portion: hafnium boride 3-5, tantalum nitride 4-6, polymerization ferrophosphorus powder 1-2, copper powder 2-3, stearic acid boron 0.4-0.8, graphite 0.5-0.7, Polycarbosilane 6-9, titanium valve 10-15, calsibar alloy powder 3-5, silane coupler kh-550 0.3-0.5, ferrozirconium 2-2.5,1% sodium carbonate liquor is appropriate, water appropriate, zinc stearate 0.4-0.6, inferior sodium phosphate 2-3, polyethylene glycol 0.3-0.4,2Mol/L copper-bath 20-25, wetting aid 2-3, iron powder 81-83;
Described wetting aid is made up of the raw material of following weight portion: Ga1-2, P1-1.3, boron oxide 0.8-1.4, titanium 1.4-1.6, Mn 1.3-1.6, vanadium oxide 0.6-0.9, SnO0.3-0.5, Bi2O3 0.2-0.4, magnesium powder 0.6-0.9, NaF0.1-0.2, water 8-10, polyethylene glycol 0.1-0.2; Preparation method is: be added to the water by polyethylene glycol, add magnesium powder after stirring, be heated to 70-80 DEG C, stir 20-30 minute, ultrasonic disperse 3-4 minute, add P, vanadium oxide, boron oxide, titanium, SnO, Bi2O3, Mn again, under 7000-8000 rev/min, stir 10-15 minute, ultrasonic disperse 4-5 minute, spraying dry, mix with other residual components, be ground to granularity and be less than 5 μm, to obtain final product.
2. the preparation method of corrosion resistant iron base powder metallurgy valve according to claim 1, is characterized in that comprising the following steps:
(1) by hafnium boride, tantalum nitride, the mixing of polymerization ferrophosphorus powder, add in 1% sodium carbonate liquor of 3-4 times of weight portion, be heated to 40-50 DEG C, stir 10-15 minute, filter, add the water washing of 3-4 times of weight portion, repeated washing 2-3 time, filter, obtain filter cake;
(2) mixed with wetting aid by filter cake, grinding 30-40 minute, adds the water of 4-5 times of weight portion, add silane coupler kh-550, stir 10-15 minute, be heated to 60-70 DEG C, then add the iron powder of copper powder, stearic acid boron, 0.8-1.2 weight portion, stir 30-40 minute, filter, spraying dry under an atmosphere of hydrogen, pulverize, cross 130 mesh sieves, obtain powder;
(3) powder that (2) step obtains is added in 2Mol/L copper-bath, add polyethylene glycol, inferior sodium phosphate, be heated to 60-70 DEG C, stirring reaction 1-2 hour, filter, be washed with water to neutrality, pass into hot hydrogen and dry, pulverize, obtain powder;
(4) powder that (3) step obtains is mixed with other residual components, ball milling, shaping, sintering, finished machined, to obtain final product.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105369111A (en) * | 2015-10-21 | 2016-03-02 | 马聪 | Automobile connecting rod forged through abrasion-resistant corrosion-resistant iron-based powder in metallurgical manner and manufacturing method of automobile connecting rod |
| CN105499591A (en) * | 2015-12-24 | 2016-04-20 | 河南颍川新材料股份有限公司 | Paint additive production and modification device and process thereof |
| CN105754343A (en) * | 2016-03-30 | 2016-07-13 | 无锡锡能锅炉有限公司 | Corrosion-resistant material for manufacture of gas-fired boiler |
| CN105861867A (en) * | 2016-06-15 | 2016-08-17 | 苏州洪河金属制品有限公司 | High-temperature-resistance alloy added with tungsten carbide and preparation method of alloy |
| CN105986203A (en) * | 2015-10-21 | 2016-10-05 | 李学峰 | High-toughness iron-base powder metallurgy forging automobile connecting rod and preparation method thereof |
| CN106075485A (en) * | 2016-06-15 | 2016-11-09 | 苏州洪河金属制品有限公司 | A kind of Novel high-temperature high-pressure autoclave liner material and preparation method thereof |
| CN106282853A (en) * | 2016-08-31 | 2017-01-04 | 宁波新睦新材料有限公司 | A kind of preparation method of automobile gear iron base composite material |
| CN106367697A (en) * | 2016-08-31 | 2017-02-01 | 宁波新睦新材料有限公司 | Preparation method for carbon nanotube reinforced ferrous matrix composite |
| CN106399874A (en) * | 2016-08-31 | 2017-02-15 | 宁波新睦新材料有限公司 | Preparing method of high-performance iron-based composite material |
| CN109865833A (en) * | 2019-02-22 | 2019-06-11 | 北京科技大学 | The method for preparing powder metallurgy of titanium or titanium alloy product, titanium or titanium alloy product |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105369111A (en) * | 2015-10-21 | 2016-03-02 | 马聪 | Automobile connecting rod forged through abrasion-resistant corrosion-resistant iron-based powder in metallurgical manner and manufacturing method of automobile connecting rod |
| CN105986203A (en) * | 2015-10-21 | 2016-10-05 | 李学峰 | High-toughness iron-base powder metallurgy forging automobile connecting rod and preparation method thereof |
| CN105499591A (en) * | 2015-12-24 | 2016-04-20 | 河南颍川新材料股份有限公司 | Paint additive production and modification device and process thereof |
| CN105499591B (en) * | 2015-12-24 | 2018-10-09 | 河南颍川新材料股份有限公司 | A kind of oil paint additive making modified technique |
| CN105754343A (en) * | 2016-03-30 | 2016-07-13 | 无锡锡能锅炉有限公司 | Corrosion-resistant material for manufacture of gas-fired boiler |
| CN105861867A (en) * | 2016-06-15 | 2016-08-17 | 苏州洪河金属制品有限公司 | High-temperature-resistance alloy added with tungsten carbide and preparation method of alloy |
| CN106075485A (en) * | 2016-06-15 | 2016-11-09 | 苏州洪河金属制品有限公司 | A kind of Novel high-temperature high-pressure autoclave liner material and preparation method thereof |
| CN106282853A (en) * | 2016-08-31 | 2017-01-04 | 宁波新睦新材料有限公司 | A kind of preparation method of automobile gear iron base composite material |
| CN106367697A (en) * | 2016-08-31 | 2017-02-01 | 宁波新睦新材料有限公司 | Preparation method for carbon nanotube reinforced ferrous matrix composite |
| CN106399874A (en) * | 2016-08-31 | 2017-02-15 | 宁波新睦新材料有限公司 | Preparing method of high-performance iron-based composite material |
| CN109865833A (en) * | 2019-02-22 | 2019-06-11 | 北京科技大学 | The method for preparing powder metallurgy of titanium or titanium alloy product, titanium or titanium alloy product |
| CN109865833B (en) * | 2019-02-22 | 2020-07-21 | 北京科技大学 | Powder metallurgy preparation method of titanium or titanium alloy product, and titanium or titanium alloy product |
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