CN106119655A - A kind of oil pipe plug - Google Patents
A kind of oil pipe plug Download PDFInfo
- Publication number
- CN106119655A CN106119655A CN201610659410.6A CN201610659410A CN106119655A CN 106119655 A CN106119655 A CN 106119655A CN 201610659410 A CN201610659410 A CN 201610659410A CN 106119655 A CN106119655 A CN 106119655A
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- CN
- China
- Prior art keywords
- oil pipe
- pipe plug
- hard alloy
- tungsten titanium
- cobalt hard
- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
Abstract
The present invention relates to a kind of oil pipe plug, belong to technical field of automobile.This oil pipe plug by tungsten titanium cobalt hard alloy by dispensing, pulverize, suppress and sintering is made, tungsten titanium cobalt hard alloy is become to be grouped into by following mass percent: Co:3 10%, TiC:10 25%, TaC:0.1 0.8%, Mo:1 5%, Mn:0 0.1%, Cr3C2: 3 10%, Sn:0 2%, Al2O3: 0 3%, HfC:0 2%, rare earth oxide: 0 0.5%, WC: surplus.Hardness, intensity, toughness, wearability and the corrosion resistance of tungsten titanium cobalt hard alloy of the present invention is strong, and processing technique is simple, and alloy surface does not has bright flower, and the oil pipe plug quality made is high, and low cost improves the market competitiveness of oil pipe plug.
Description
Technical field
The present invention relates to a kind of auto parts machinery, particularly relate to a kind of oil pipe plug, belong to technical field of automobile.
Background technology
Lasting, fast-developing along with national economy, improving constantly of living standards of the people, China's Transportation Industry is held
Continuous growth, auto output and the consuming capacity are that blowout increases.And in the face of the day by day fierce market competition, auto parts and components supply
Answer constantly more safe efficient, the auto parts and components of low cost of research and development that business is the most growing with each passing hour.
Traditional oil pipe plug, is affected by material and processing technique, and its combination property and cost are located in the market competition
In inferior position status, have impact on the economic benefit of enterprise and the industrialization process of auto parts and components.
Summary of the invention
It is an object of the invention to for the above-mentioned problems in the prior art, it is proposed that a kind of good combination property, cost
Low oil pipe plug.
The purpose of the present invention can be realized by following technical proposal: a kind of oil pipe plug, described oil pipe plug is by tungsten titanium
Cobalt hard alloy is made, and described tungsten titanium cobalt hard alloy is formed by following mass percent composition sintering: Co:3-10%, TiC:
10-25%, TaC:0.1-0.8%, Mo:1-5%, Mn:0-0.1%, Cr3C2: 3-10%, Sn:0-2%, Al2O3: 0-3%,
HfC:0-2%, rare earth oxide: 0-0.5%, WC: surplus.
Oil pipe plug of the present invention uses tungsten titanium cobalt hard alloy to make, and has higher intensity, wearability, corrosion resistance etc.
Performance, improves the combination property of oil pipe plug, thus improves the market competitiveness of oil pipe plug.But, common tungsten titanium
Still there is certain weak point in cobalt hard alloy, such as: 1) crescent hollow abrasion easily occurs；2) with tungsten-cobalt hard alloy phase
Ratio, the bending strength of the tungsten titanium cobalt hard alloy of identical cobalt content is relatively low；3) fragility is relatively big, and brittle fracture easily occurs；4) product
Surface is easily generated bright flower, affects product turnout quality etc..
The problem existed for common tungsten titanium cobalt hard alloy, the Mo element of present invention interpolation, Mn element, TaC can rise
Crystal grain thinning, the effect of solution strengthening, under the common effect of solution strengthening and crystal grain thinning, tungsten titanium cobalt hard alloy strong
Degree, hardness and toughness are all raised significantly.It addition, Cr element replaces part Mo element to play the effect of solution strengthening, reduce because of
Mo element adds the problem too much causing tungsten titanium cobalt hard alloy elongation percentage to decline.And the Sn element of trace can reduce sintering temperature
The performances such as degree, saves production cost, it is also possible to improve the hot strength of tungsten titanium cobalt hard alloy, thermal coefficient of expansion.Trace
Al2O3The hardness of tungsten titanium cobalt hard alloy of the present invention can be improved.The rare earth element of trace refines crystalline substance in microalloying mode
Grain, purification impurity are to put forward heavy alloyed hardness and intensity.And the HfC tool of the trace that the present invention adds in tungsten titanium cobalt hard alloy
Having good stability, its addition plays a part disperse and solution strengthening to tungsten titanium cobalt hard alloy, and the disperse of HfC
Particle energy pinning dislocation, makes dislocation network Dispersed precipitate, the recrystallization of suppression alloy, puies forward heavy alloyed intensity.
In above-mentioned a kind of oil pipe plug, described tungsten titanium cobalt hard alloy is by following mass percent composition sintering
Become: Co:4-7%, TiC:13-20%, TaC:0.2-0.5%, Mo:2-3%, Mn:0.03-0.05%, Cr3C2: 5-7%, Sn:
0.5-1.2%, Al2O3: 0.5-2%, HfC:0.3-1.7%, rare earth oxide: 0.1-0.4%, WC: surplus.
In above-mentioned a kind of oil pipe plug, described rare earth oxide is CeO2、La2O3In at least one.La's and Ce
Rare earth rich reserves, price is relatively low, and preferably La and Ce can save the cost of tungsten titanium cobalt hard alloy.It addition, the present invention enters one
Walking preferred rare earth oxide is CeO2And La2O3Compound interpolation, during addition≤0.3%, the performance of tungsten titanium cobalt hard alloy is
Good.
In above-mentioned a kind of oil pipe plug, described tungsten titanium cobalt hard alloy by dispensing, pulverize, suppress and sinter system
Become, wherein, obtaining mass ratio after pulverizing is 1:(0.5-2) the first powder body and the second powder body, the particle diameter of the first powder body is 400-
600nm, the particle diameter of the second powder body is 20-50nm.The powder of two kinds of different-grain diameters is formed after raw material pulverizing of the present invention, thus in pressure
The space that during system, fine grained is filled between coarse granule, apparent density is high, and compressibility is good, good moldability, and intensity is high, disconnected
Split good toughness.
In above-mentioned a kind of oil pipe plug, the pressure of described compacting is 300-330MPa, and the time of compacting is 1-5min.
In above-mentioned a kind of oil pipe plug, the temperature of described sintering is 1100-1200 DEG C, and temperature retention time is 30-
80min.Tungsten titanium cobalt hard alloy of the present invention contains the Sn element of trace, sintering temperature can be made to reduce about 200 DEG C, save tungsten
The production cost of titanium cobalt hard alloy, increases economic efficiency.
In above-mentioned a kind of oil pipe plug, being filled with weak carburizing gas during described insulation, weak carburizing gas is preferred
For CO.After being filled with weak carburizing gas in insulating process, sintering atmosphere becomes carburizing atmosphere, now tungsten titanium cobalt hard alloy
The carbon on surface reduces toward the trend of diffusion mobility in atmosphere, the most reversely spreads.Due to the effect of carburizing atmosphere, viscous in product
Knot does not migrates mutually or reversely migrates toward interiors of products.The addition of the most weak carburizing gas reduces the vacuum in stove, makes bonding
The volatilization of phase reduces, thus product surface can't see bright flower, improves the delivery quality of product.
In above-mentioned a kind of oil pipe plug, described tungsten titanium cobalt hard alloy makes oil pipe core by cold extrusion and polish
Rod.
As preferably, described polish includes car R, thread rolling and goes back to hole.
Compared with prior art, the method have the advantages that
Hardness, intensity, toughness, wearability and the corrosion resistance of tungsten titanium cobalt hard alloy the most of the present invention is strong, the oil pipe made
Plug combination property is preferable.
Tungsten titanium cobalt hard alloy processing technique the most of the present invention is simple, and alloy surface does not has bright flower, the oil pipe plug matter made
Amount height, low cost, improve the market competitiveness of oil pipe plug.
Accompanying drawing explanation
Fig. 1 is the generalized section of oil pipe plug of the present invention.
Detailed description of the invention
The following is the specific embodiment of the present invention, and technical scheme is further retouched by accompanying drawings
State, but the present invention is not limited to these embodiments.Preparation technology described in following embodiment, if no special instructions, is routine
Technique；Described raw material, if no special instructions, the most commercially obtains, or can conventional method prepare.
Table 1: the constituent of tungsten titanium cobalt hard alloy of the present invention and mass percent thereof
Embodiment 1:
Dispensing is carried out by constituent and the mass percent thereof of embodiment 1 tungsten titanium cobalt hard alloy in table 1, wherein, dilute
Soil oxide is CeO2And La2O3It is the mixing of 1:1 in mass ratio.Then being mixed by raw material and being ground into particle diameter is 400-600nm
Powder body, the powder body weighing half is crushed to the second powder body that particle diameter is 20-50nm again.Then two kinds of powder body are sufficiently mixed
Uniformly, under the pressure of 310MPa, suppress 3min molding, obtain base substrate.Base substrate is sintered under the vacuum condition of 0.1Pa, burns
Junction temperature is 1150 DEG C, and temperature retention time is 40min, is filled with weak carburizing gas CO during insulation, and insulation stops after terminating
It is filled with weak carburizing gas and quickly cools down, obtaining tungsten titanium cobalt hard alloy.
The above-mentioned tungsten titanium cobalt hard alloy made carried out cold extrusion, car R, thread rolling and goes back to hole, making oil as shown in Figure 1
Core rod.
Embodiment 2:
Dispensing is carried out by constituent and the mass percent thereof of embodiment 2 tungsten titanium cobalt hard alloy in table 1, wherein, dilute
Soil oxide is CeO2.Then raw material mixed and be ground into the powder body that particle diameter is 400-600nm, weighing the powder body of half again
It is crushed to the second powder body that particle diameter is 20-50nm.Then two kinds of powder body are sufficiently mixed uniformly, suppress under the pressure of 300MPa
5min molding, obtains base substrate.Base substrate is sintered under the vacuum condition of 0.1Pa, and sintering temperature is 1100 DEG C, and temperature retention time is
80min, is filled with weak carburizing gas CO during insulation, and insulation stops being filled with weak carburizing gas and carrying out the coldest after terminating
But, tungsten titanium cobalt hard alloy is obtained.
The above-mentioned tungsten titanium cobalt hard alloy made carried out cold extrusion, car R, thread rolling and goes back to hole, making oil as shown in Figure 1
Core rod.
Embodiment 3:
Dispensing is carried out by constituent and the mass percent thereof of embodiment 3 tungsten titanium cobalt hard alloy in table 1, wherein, dilute
Soil oxide is La2O3.Then raw material mixed and be ground into the powder body that particle diameter is 400-600nm, weighing the powder body of half again
It is crushed to the second powder body that particle diameter is 20-50nm.Then two kinds of powder body are sufficiently mixed uniformly, suppress under the pressure of 305MPa
4min molding, obtains base substrate.Base substrate is sintered under the vacuum condition of 0.1Pa, and sintering temperature is 1120 DEG C, and temperature retention time is
70min, is filled with weak carburizing gas CO during insulation, and insulation stops being filled with weak carburizing gas and carrying out the coldest after terminating
But, tungsten titanium cobalt hard alloy is obtained.
The above-mentioned tungsten titanium cobalt hard alloy made carried out cold extrusion, car R, thread rolling and goes back to hole, making oil as shown in Figure 1
Core rod.
Embodiment 4:
Dispensing is carried out by constituent and the mass percent thereof of embodiment 4 tungsten titanium cobalt hard alloy in table 1, wherein, dilute
Soil oxide is CeO2And La2O3It is the mixing of 1:1 in mass ratio.Then being mixed by raw material and being ground into particle diameter is 400-600nm
Powder body, the powder body weighing half is crushed to the second powder body that particle diameter is 20-50nm again.Then two kinds of powder body are sufficiently mixed
Uniformly, under the pressure of 310MPa, suppress 3min molding, obtain base substrate.Base substrate is sintered under the vacuum condition of 0.1Pa, burns
Junction temperature is 1150 DEG C, and temperature retention time is 40min, is filled with weak carburizing gas CO during insulation, and insulation stops after terminating
It is filled with weak carburizing gas and quickly cools down, obtaining tungsten titanium cobalt hard alloy.
The above-mentioned tungsten titanium cobalt hard alloy made carried out cold extrusion, car R, thread rolling and goes back to hole, making oil as shown in Figure 1
Core rod.
Embodiment 5:
Dispensing is carried out by constituent and the mass percent thereof of embodiment 5 tungsten titanium cobalt hard alloy in table 1, wherein, dilute
Soil oxide is CeO2And La2O3It is the mixing of 2:1 in mass ratio.Then being mixed by raw material and being ground into particle diameter is 400-600nm
Powder body, the powder body weighing half is crushed to the second powder body that particle diameter is 20-50nm again.Then two kinds of powder body are sufficiently mixed
Uniformly, under the pressure of 320MPa, suppress 3min molding, obtain base substrate.Base substrate is sintered under the vacuum condition of 0.1Pa, burns
Junction temperature is 1160 DEG C, and temperature retention time is 60min, is filled with weak carburizing gas CO during insulation, and insulation stops after terminating
It is filled with weak carburizing gas and quickly cools down, obtaining tungsten titanium cobalt hard alloy.
The above-mentioned tungsten titanium cobalt hard alloy made carried out cold extrusion, car R, thread rolling and goes back to hole, making oil as shown in Figure 1
Core rod.
Embodiment 6:
Dispensing is carried out by constituent and the mass percent thereof of embodiment 6 tungsten titanium cobalt hard alloy in table 1, wherein, dilute
Soil oxide is CeO2And La2O3It is the mixing of 1:2 in mass ratio.Then being mixed by raw material and being ground into particle diameter is 400-600nm
Powder body, the powder body weighing half is crushed to the second powder body that particle diameter is 20-50nm again.Then two kinds of powder body are sufficiently mixed
Uniformly, under the pressure of 330MPa, suppress 1min molding, obtain base substrate.Base substrate is sintered under the vacuum condition of 0.1Pa, burns
Junction temperature is 1200 DEG C, and temperature retention time is 30min, is filled with weak carburizing gas CO during insulation, and insulation stops after terminating
It is filled with weak carburizing gas and quickly cools down, obtaining tungsten titanium cobalt hard alloy.
The above-mentioned tungsten titanium cobalt hard alloy made carried out cold extrusion, car R, thread rolling and goes back to hole, making oil as shown in Figure 1
Core rod.
Oil pipe plug embodiment 1-6 made carries out performance test, and test result is as shown in table 2.
Table 2: the performance test results
As known from Table 2, the combination property using the oil pipe plug that tungsten titanium cobalt hard alloy of the present invention makes is preferable, and,
Present invention improves over processing technique, the oil pipe mandrel surface made does not has bright flower, and surface quality is good, and low cost.
Comparative example 1:
Comparative example 1 differs only in embodiment 3, and comparative example 1 is not filled with weak carburetted gas during sintered heat insulating
Body.Result is, there is obvious bright flower on the tungsten titanium cobalt hard alloy surface that comparative example 1 is made, affects product turnout quality.
In above-described embodiment and alternative thereof, the first powder body obtained after pulverizing and the mass ratio of the second powder body also may be used
Think for 1:0.5,1:0.6,1:0.7,1:0.8,1:0.9,1:1.1,1:1.2,1:1.3,1:1.4,1:1.5,1:1.6,1:
1.7,1:1.8,1:1.9,1:2.
In view of the present invention program embodiment is numerous, each embodiment experimental data is huge numerous, is not suitable for arranging the most one by one
Lift explanation, but the content of the required checking of each embodiment and the final conclusion obtained are the most close, so the most unreal to each
The checking content executing example illustrates one by one, in place of only the present patent application excellence being described using embodiment 1-6 as representative.
In place of this place embodiment is to the claimed non-limit of technical scope midrange, the most all want in the present invention
Ask in the range of protection.
Specific embodiment described herein is only to present invention spirit explanation for example.Technology neck belonging to the present invention
Described specific embodiment can be made various amendment or supplements or use similar mode to substitute by the technical staff in territory, but also
Do not deviate by the spirit of the present invention or surmount scope defined in appended claims.
Although the present invention has been made a detailed description and has quoted some specific embodiments as proof, but skilled to this area
For technical staff, as long as it is obvious for can making various changes without departing from the spirit and scope of the present invention or revise.
Claims (8)
1. an oil pipe plug, it is characterised in that described oil pipe plug is made up of tungsten titanium cobalt hard alloy, described tungsten titanium cobalt hard
Alloy is formed by following mass percent composition sintering: Co:3-10%, TiC:10-25%, TaC:0.1-0.8%, Mo:1-
5%, Mn:0-0.1%, Cr3C2: 3-10%, Sn:0-2%, Al2O3: 0-3%, HfC:0-2%, rare earth oxide: 0-0.5%,
WC: surplus.
A kind of oil pipe plug the most according to claim 1, it is characterised in that described tungsten titanium cobalt hard alloy is by following quality
Percent composition sintering forms: Co:4-7%, TiC:13-20%, TaC:0.2-0.5%, Mo:2-3%, Mn:0.03-
0.05%, Cr3C2: 5-7%, Sn:0.5-1.2%, Al2O3: 0.5-2%, HfC:0.3-1.7%, rare earth oxide: 0.1-
0.4%, WC: surplus.
A kind of oil pipe plug the most according to claim 1 and 2, it is characterised in that described rare earth oxide is CeO2、La2O3
In at least one.
A kind of oil pipe plug the most according to claim 1 and 2, it is characterised in that described tungsten titanium cobalt hard alloy is by joining
Expecting, pulverize, suppress and sintering is made, wherein, obtaining mass ratio after pulverizing is 1:(0.5-2) the first powder body and the second powder body,
The particle diameter of the first powder body is 400-600nm, and the particle diameter of the second powder body is 20-50nm.
A kind of oil pipe plug the most according to claim 4, it is characterised in that the pressure of described compacting is 300-330MPa,
The time of compacting is 1-5min.
A kind of oil pipe plug the most according to claim 4, it is characterised in that the temperature of described sintering is 1100-1200 DEG C,
Temperature retention time is 30-80min.
A kind of oil pipe plug the most according to claim 6, it is characterised in that be filled with weak carburetted gas during described insulation
Body.
A kind of oil pipe plug the most according to claim 4, it is characterised in that described tungsten titanium cobalt hard alloy passes through cold extrusion
Oil pipe plug is made with polish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610659410.6A CN106119655A (en) | 2016-08-11 | 2016-08-11 | A kind of oil pipe plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610659410.6A CN106119655A (en) | 2016-08-11 | 2016-08-11 | A kind of oil pipe plug |
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| Publication Number | Publication Date |
|---|---|
| CN106119655A true CN106119655A (en) | 2016-11-16 |
Family
ID=57258906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610659410.6A Pending CN106119655A (en) | 2016-08-11 | 2016-08-11 | A kind of oil pipe plug |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108642361A (en) * | 2018-06-11 | 2018-10-12 | 顾亚新 | A kind of high strength and high hardness ceramic material and its production technology |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5154013A (en) * | 1974-11-06 | 1976-05-12 | Dijet Ind Co Ltd | CHOKOGOKIN |
| CN1172168A (en) * | 1996-07-30 | 1998-02-04 | 大韩重石株式会社 | Ultra-hard alloy for wrist watch and decoration |
| CN101760685A (en) * | 2008-12-25 | 2010-06-30 | 北京有色金属研究总院 | Superfine WC-Co cemented carbide containing rare-earth elements and preparation method thereof |
| CN104651700A (en) * | 2013-11-22 | 2015-05-27 | 宁波金鹏高强度紧固件有限公司 | Equipment fastener under strong acid/alkali environment, and manufacturing method thereof |
| CN105715266A (en) * | 2016-01-29 | 2016-06-29 | 柳州市安龙机械设备有限公司 | Mine hard alloy cutting pick |
-
2016
- 2016-08-11 CN CN201610659410.6A patent/CN106119655A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5154013A (en) * | 1974-11-06 | 1976-05-12 | Dijet Ind Co Ltd | CHOKOGOKIN |
| CN1172168A (en) * | 1996-07-30 | 1998-02-04 | 大韩重石株式会社 | Ultra-hard alloy for wrist watch and decoration |
| CN101760685A (en) * | 2008-12-25 | 2010-06-30 | 北京有色金属研究总院 | Superfine WC-Co cemented carbide containing rare-earth elements and preparation method thereof |
| CN104651700A (en) * | 2013-11-22 | 2015-05-27 | 宁波金鹏高强度紧固件有限公司 | Equipment fastener under strong acid/alkali environment, and manufacturing method thereof |
| CN105715266A (en) * | 2016-01-29 | 2016-06-29 | 柳州市安龙机械设备有限公司 | Mine hard alloy cutting pick |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108642361A (en) * | 2018-06-11 | 2018-10-12 | 顾亚新 | A kind of high strength and high hardness ceramic material and its production technology |
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Application publication date: 20161116 |