CN104550933A - High-temperature resistant and high-pressure resistant powder metallurgy material for valve and preparation method of high-temperature and high-pressure resistant powder metallurgy material - Google Patents
High-temperature resistant and high-pressure resistant powder metallurgy material for valve and preparation method of high-temperature and high-pressure resistant powder metallurgy material Download PDFInfo
- Publication number
- CN104550933A CN104550933A CN201410819233.4A CN201410819233A CN104550933A CN 104550933 A CN104550933 A CN 104550933A CN 201410819233 A CN201410819233 A CN 201410819233A CN 104550933 A CN104550933 A CN 104550933A
- Authority
- CN
- China
- Prior art keywords
- powder
- minute
- parts
- add
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Powder Metallurgy (AREA)
Abstract
The invention discloses a high-temperature resistant and high-pressure resistant powder metallurgy material for a valve. The high-temperature and high-pressure resistant powder metallurgy material is prepared from the following raw materials in parts by weight: 2-3 parts of LaO.6Al2O3, 3.8-4.2 parts of Mo, 0.3-0.6 part of Cu, 0.1-0.2 part of As, 0.2-0.3 part of Ho, 2-2.6 parts of nano iron powder, 16-19 parts of titanium carbonitride, 0.6-0.9 part of nano tungsten powder, 0.3-0.5 part of nano carbon black, 0.3-0.4 part of a silane coupling agent kh-550, a proper amount of 1% sodium carbonate solution, a proper amount of water, 4.5-5.5 parts of sodium hypophosphite, 0.4-0.6 part of polyethylene glycol, 60-65 parts of 2Mol/L copper sulfate solution, 2-3 parts of a wetting assistant and 73-76 parts of iron powder. The LaO.6Al2O3, the titanium carbonitride and the nano tungsten powder are added to the material for the valve disclosed by the invention, so that the heat resistance of the material is improved; the material has the advantages of high strength, excellent heat resistance and long service life, and is suitable for preparation of the valves which work at high temperature and high pressure.
Description
Technical field
The present invention relates to powder metallurgical technology, particularly relate to a kind of valve high temperature high voltage resistant powdered metallurgical material 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.When the medium that valve passes through and operating mode different time have different requirements to valve material, have different requirements to the performance such as temperature tolerance, corrosion resistance, intensity of material.The operating pressure of valve can super-pressure from 0.0013MPa to 1000MPa, and operating temperature is from the ultralow temperature of-270 DEG C to the high temperature of 1430 DEG C.
Valve material can make of powdered metallurgical material, but common iron powder 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.In iron-base powder metallurgy material, add the nonmetallic phases such as porcelain powder, the heat resistance of material, corrosion resistance can be improved, improve hardness, improve non-oxidizability, improve creep-resistant property.But due to nonmetallic phase and Metal Phase poor compatibility, easily make composition occur segregation, structural homogenity is poor, and intensity is uneven, occur piebald, running-in ability is poor, wears no resistance, and can not bear larger pressure, heat declines seriously, and cracking resistance can be poor, and thermal fatigue resistance can be poor, and service life is short.
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 valve high temperature high voltage resistant powdered metallurgical material and preparation method thereof, this valve material has good heat resistance and high intensity, is applicable to the valve making operation under HTHP, long service life.
Technical scheme of the present invention is as follows:
A kind of valve high temperature high voltage resistant powdered metallurgical material, is characterized in that being made up of the raw material of following weight portion: LaO6Al2O3 2-3, Mo3.8-4.2, Cu0.3-0.6, As0.1-0.2, Ho0.2-0.3, nanometer iron powder 2-2.6, titanium carbonitride 16-19, nano-tungsten powder 0.6-0.9, nanometer carbon black 0.3-0.5, silane coupler kh-550 0.3-0.4,1% sodium carbonate liquor is appropriate, water appropriate, inferior sodium phosphate 4.5-5.5, polyethylene glycol 0.4-0.6,2Mol/L copper-bath 60-65, wetting aid 2-3, iron powder 73-76;
Described wetting aid is made up of the raw material of following weight portion: K2ZrF6 1-2, V2O52-3, Nano Silver 0.8-1.4, TiN0.4-0.6, MoO3 3-4, nano mica powder 0.6-0.9, water 8-10, polyethylene glycol 0.1-0.2; Preparation method is: be added to the water by polyethylene glycol, Nano Silver is added after stirring, stir 20-30 minute, ultrasonic disperse 3-4 minute, then add other residual components, 10-15 minute is stirred under 7000-8000 rev/min, ultrasonic disperse 4-5 minute, is stirred to over dry in 120-130 DEG C of oil bath, pulverizes, cross 80 mesh sieves, to obtain final product.
The preparation method of described valve high temperature high voltage resistant powdered metallurgical material, is characterized in that comprising the following steps:
(1) by LaO6Al2O3, titanium carbonitride mixing, 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 nanometer iron powder, 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 hydrogen desiccation, 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
Valve material of the present invention with the addition of LaO6Al2O, titanium carbonitride, nano-tungsten powder, adds the heat resistance of material; Manufacture craft of the present invention makes Metal Phase and nonmetallic phase mutually intert, and combines closely, and adds wetability and the caking property of nonmetallic phase and Metal Phase, can prevent component segregation, makes material structure even, adds intensity and toughness; 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.Material of the present invention had both had high intensity, had again excellent heat resistance, was applicable to make the valve of operation under HTHP, long service life.
Detailed description of the invention
A kind of valve high temperature high voltage resistant powdered metallurgical material, is made up of the raw material of following weight portion (kilogram): LaO6Al2O3 2.5, Mo4, Cu0.4, As0.1, Ho0.3, nanometer iron powder 2.3, titanium carbonitride 17, nano-tungsten powder 0.7, nanometer carbon black 0.4, silane coupler kh-550 0.4,1% sodium carbonate liquor is appropriate, water appropriate, inferior sodium phosphate 5, polyethylene glycol 0.5,2Mol/L copper-bath 63, wetting aid 2.5, iron powder 75;
Described wetting aid is made up of the raw material of following weight portion (kilogram): K2ZrF6 1.5, V2O52.5, Nano Silver 1.1, TiN0.4-0.6, MoO3 3.5, nano mica powder 0.8, water 9, polyethylene glycol 0.1; Preparation method is: be added to the water by polyethylene glycol, adds Nano Silver after stirring, and stirs 25 minutes, ultrasonic disperse 3 minutes, add other residual components again, stir 14 minutes under 7500 revs/min, ultrasonic disperse 5 minutes, is stirred to over dry in 125 DEG C of oil baths, pulverize, cross 80 mesh sieves, to obtain final product.
The preparation method of described valve high temperature high voltage resistant powdered metallurgical material, comprises the following steps:
(1) by LaO6Al2O3, titanium carbonitride mixing, 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 3 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 nanometer iron powder, stir 35 minutes, filter, spraying dry under an atmosphere of hydrogen, pulverizes, and crosses 130 mesh sieves, obtains 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 hydrogen desiccation, 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 64 after tested, and density is 95.37%, voidage 9.33%, and fracture toughness is 14.8MPam
1/2, compression strength is 155MPa, and bending strength is 501MPa.
Claims (2)
1. a valve high temperature high voltage resistant powdered metallurgical material, is characterized in that being made up of the raw material of following weight portion: LaO6Al2O3 2-3, Mo3.8-4.2, Cu0.3-0.6, As0.1-0.2, Ho0.2-0.3, nanometer iron powder 2-2.6, titanium carbonitride 16-19, nano-tungsten powder 0.6-0.9, nanometer carbon black 0.3-0.5, silane coupler kh-550 0.3-0.4,1% sodium carbonate liquor are appropriate, water appropriate, inferior sodium phosphate 4.5-5.5, polyethylene glycol 0.4-0.6,2Mol/L copper-bath 60-65, wetting aid 2-3, iron powder 73-76;
Described wetting aid is made up of the raw material of following weight portion: K2ZrF6 1-2, V2O52-3, Nano Silver 0.8-1.4, TiN0.4-0.6, MoO3 3-4, nano mica powder 0.6-0.9, water 8-10, polyethylene glycol 0.1-0.2; Preparation method is: be added to the water by polyethylene glycol, Nano Silver is added after stirring, stir 20-30 minute, ultrasonic disperse 3-4 minute, then add other residual components, 10-15 minute is stirred under 7000-8000 rev/min, ultrasonic disperse 4-5 minute, is stirred to over dry in 120-130 DEG C of oil bath, pulverizes, cross 80 mesh sieves, to obtain final product.
2. the valve preparation method of high temperature high voltage resistant powdered metallurgical material according to claim 1, is characterized in that comprising the following steps:
(1) by LaO6Al2O3, titanium carbonitride mixing, 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 nanometer iron powder, 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 hydrogen desiccation, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410819233.4A CN104550933A (en) | 2014-12-25 | 2014-12-25 | High-temperature resistant and high-pressure resistant powder metallurgy material for valve and preparation method of high-temperature and high-pressure resistant powder metallurgy material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410819233.4A CN104550933A (en) | 2014-12-25 | 2014-12-25 | High-temperature resistant and high-pressure resistant powder metallurgy material for valve and preparation method of high-temperature and high-pressure resistant powder metallurgy material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104550933A true CN104550933A (en) | 2015-04-29 |
Family
ID=53068591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410819233.4A Pending CN104550933A (en) | 2014-12-25 | 2014-12-25 | High-temperature resistant and high-pressure resistant powder metallurgy material for valve and preparation method of high-temperature and high-pressure resistant powder metallurgy material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104550933A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105420602A (en) * | 2015-11-05 | 2016-03-23 | 安徽银球轴承有限公司 | Self-lubrication sintered metal powder bearing with good abrasion resistance and preparation method of self-lubrication sintered metal powder bearing |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51135806A (en) * | 1976-01-29 | 1976-11-25 | Mitsubishi Motors Corp | Process for producing an iron_base sintered alloy for valve seats |
| CN101407889A (en) * | 2008-11-21 | 2009-04-15 | 海安县鹰球集团有限公司 | Powder metallurgy rare earth copper coated ferroalloy oil-retaining bearing and manufacturing method thereof |
| CN102015163A (en) * | 2005-01-10 | 2011-04-13 | H.C.施塔克股份有限公司 | Metallic powder mixtures |
| CN103252492A (en) * | 2013-04-09 | 2013-08-21 | 吴建平 | Preparation method for powder metallurgy for automotive brake valve block |
| CN103551578A (en) * | 2013-10-11 | 2014-02-05 | 芜湖市鸿坤汽车零部件有限公司 | Power metallurgy iron-based engine valve seat and production method thereof |
| CN103572163A (en) * | 2013-10-10 | 2014-02-12 | 铜陵国方水暖科技有限责任公司 | Powder-metallurgy valve seat insert and preparation method thereof |
| CN103600075A (en) * | 2013-10-10 | 2014-02-26 | 铜陵新创流体科技有限公司 | Powder metallurgical cobalt-free iron-base alloy and manufacture method thereof |
-
2014
- 2014-12-25 CN CN201410819233.4A patent/CN104550933A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51135806A (en) * | 1976-01-29 | 1976-11-25 | Mitsubishi Motors Corp | Process for producing an iron_base sintered alloy for valve seats |
| CN102015163A (en) * | 2005-01-10 | 2011-04-13 | H.C.施塔克股份有限公司 | Metallic powder mixtures |
| CN101407889A (en) * | 2008-11-21 | 2009-04-15 | 海安县鹰球集团有限公司 | Powder metallurgy rare earth copper coated ferroalloy oil-retaining bearing and manufacturing method thereof |
| CN103252492A (en) * | 2013-04-09 | 2013-08-21 | 吴建平 | Preparation method for powder metallurgy for automotive brake valve block |
| CN103572163A (en) * | 2013-10-10 | 2014-02-12 | 铜陵国方水暖科技有限责任公司 | Powder-metallurgy valve seat insert and preparation method thereof |
| CN103600075A (en) * | 2013-10-10 | 2014-02-26 | 铜陵新创流体科技有限公司 | Powder metallurgical cobalt-free iron-base alloy and manufacture method thereof |
| CN103551578A (en) * | 2013-10-11 | 2014-02-05 | 芜湖市鸿坤汽车零部件有限公司 | Power metallurgy iron-based engine valve seat and production method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105420602A (en) * | 2015-11-05 | 2016-03-23 | 安徽银球轴承有限公司 | Self-lubrication sintered metal powder bearing with good abrasion resistance and preparation method of self-lubrication sintered metal powder bearing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104550913A (en) | Corrosion-resistant iron-based powder metallurgy valve and preparation method thereof | |
| CN103924144B (en) | A kind of soap-free emulsion polymeization phase ultrafine WC hard alloy preparation method | |
| CN102039498B (en) | Sintered flux for two phase stainless steel | |
| CN104550931A (en) | Scattering particle reinforced iron-based powder metallurgical valve and preparation method thereof | |
| CN104550923A (en) | Iron-base powder metallurgy material for high temperature environment valve and preparation method of iron-base powder metallurgy material | |
| CN105154706B (en) | A kind of preparation method of high-performance superfine hard alloy | |
| CN104550934A (en) | Iron-base powder metallurgy material for high pressure valve and preparation method thereof | |
| CN104550908A (en) | Cracking-resistant iron-base powder metallurgy material used for valve and preparation method of cracking-resistant iron-base powder metallurgy material | |
| CN104232967B (en) | Method for preparing low binder phase wolfram carbide hard alloy | |
| CN104588641A (en) | Zirconium silicate whisker reinforced valve material and preparation method thereof | |
| CN102162079A (en) | Low-oxygen-content high-yield spherical aluminum bronze alloy powder for thermal spraying and preparation method thereof | |
| CN103706784A (en) | Agglomerated composite powder for high-temperature abradable seal coating and preparation method thereof | |
| CN101342648A (en) | Iron-base alloy powder for high-pressure valve sealing surface weld deposit | |
| CN104550933A (en) | High-temperature resistant and high-pressure resistant powder metallurgy material for valve and preparation method of high-temperature and high-pressure resistant powder metallurgy material | |
| CN104550918A (en) | Acid-resistant powder metallurgy material for valve and preparation method of acid-resistant powder metallurgy material | |
| CN104550932A (en) | Iron-based-fused alumina zirconia powder metallurgy valve material and preparation method thereof | |
| CN107695558A (en) | A kind of nickel-base welding rod | |
| CN104550917A (en) | Wear-proof powder metallurgy material used for valve and preparation method of wear-proof powder metallurgy material | |
| CN104550927A (en) | Iron-base powder metallurgy material containing electric fused mullite powder for valve and preparation method of iron-base powder metallurgy material | |
| CN104588640A (en) | High-hardness ferrum-based powder metallurgy material for valve and preparing method thereof | |
| CN104550912A (en) | High-temperature-resistant iron-based powder metallurgy material for valve and preparation method of material | |
| CN104550930A (en) | Iron-based aluminum oxide composite powder metallurgy material for valve and preparation method of iron-based aluminum oxide composite powder metallurgy material | |
| CN104550922A (en) | Powder metallurgy material for high-finish-degree valve and preparation method of powder metallurgy material | |
| CN104550914A (en) | Iron-based self-lubrication powder metallurgy material for valve and preparation method of material | |
| CN103031467A (en) | Copper alloy material and production method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150429 |