CN109371313A - A kind of preparation process of wear-resistant automobile clutch pressure plate - Google Patents
A kind of preparation process of wear-resistant automobile clutch pressure plate Download PDFInfo
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- CN109371313A CN109371313A CN201811479831.6A CN201811479831A CN109371313A CN 109371313 A CN109371313 A CN 109371313A CN 201811479831 A CN201811479831 A CN 201811479831A CN 109371313 A CN109371313 A CN 109371313A
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- pressure plate
- clutch pressure
- automobile clutch
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D5/00—Heat treatments of cast-iron
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
- C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
- C21D7/06—Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The present invention relates to clutch compressing disc technical fields, more particularly to a kind of preparation process of wear-resistant automobile clutch pressure plate, by adding alloying element into molten steel during solution melting, and ceramic shot-peening processing is further carried out to the platen of forming processes is overheated after casting, the fatigue limit of platen workpiece surface is promoted, so that increasing the abrasion resistance properties of platen；The present invention provides a kind of preparation processes of wear-resistant automobile clutch pressure plate, preparation process of the invention improves the antioxygenic property of steel at high temperature, and in a certain range by the control of the silicone content of addition, it avoids because silicone content is excessively high so that skin decarburization aggravates, the toughness for reducing steel, reduces the Acceptable life of clutch compressing disc；By adding niobium element, enables and improve harden ability in sub-eutectoid steel, stablize the frictional behaviour of steel construction by adding the vermiculite of nonmetallic materials.
Description
Technical field
The present invention relates to clutch compressing disc technical fields, and in particular to a kind of preparation work of wear-resistant automobile clutch pressure plate
Skill.
Background technique
Clutch is the important component of automobile dynamic system, it, which is responsible for, will be cut off and connected between power and engine
The work connect.When urban road or complicated highway section drive, clutch is most frequently used one of component.And clutch pressure
Disk is an important structure on clutch, and effect plays an important role to ride safety of automobile, is rubbed on clutch compressing disc
Pad is that very wear-resisting asbestos and copper wire manufacture just as the brake(-holder) block on wheel.
Platen is a rosette, is the components of automobile clutch, and normal state is that same clutch disc is closely tied
It closes, becomes an entirety, rotated with engine, and power is passed to gearbox, in order to guarantee the performance of automobile platen
It is required that having to the chemical component of automobile platen casting, metallographic structure, graphite form, tensile strength, hardness etc. more stringent
Requirement.The most basic reason that automobile platen easily causes early deformation to damage is thermal deformation, and followed by friction is scratched with mechanical.This
Mainly since platen sheet is as cast member, material is the gray cast iron for adding alloying element, substantially first by iron, carbon and silicon etc.
The eutectic alloy of element composition, mechanical property depend greatly on its matrix；Existing platen material is general
Using gray cast iron, a small amount of alloying element can be added in addition to enhance its mechanical strength；Graphite flake in gray cast iron has cutting metal
Matrix, the effect for destroying its continuity, reducing its intensity should be avoided and generate long and thin graphite flake and coarse graphite flake, real
Since intensity, plasticity, the toughness in casting containing flake graphite are almost nil in the production of border, the continuity of matrix is destroyed, is reduced
Matrix stress effective area, and form stress at graphite flake tip and concentrate, so that material is formed brittle fracture.
Summary of the invention
Therefore, the present invention provides a kind of preparation process of wear-resistant automobile clutch pressure plate, preparation processes of the invention
The antioxygenic property of steel at high temperature is improved, and in a certain range by the control of the silicone content of addition, is avoided because of silicone content
It is excessively high so that skin decarburization aggravates, reduce the toughness of steel, reduce the Acceptable life of clutch compressing disc；Pass through addition niobium member
Element enables and improves harden ability in sub-eutectoid steel, stablizes the frictional behaviour of steel construction by adding the vermiculite of nonmetallic materials.
In order to achieve the above object, the present invention is achieved by the following technical programs:
A kind of preparation process of wear-resistant automobile clutch pressure plate, preparation process include the following steps:
1) melt melting: 12-15 parts of scrap iron, 0.5-0.8 parts of tungsten and 10-15 parts of the pig iron being added into electric induction furnace,
1150~1200 DEG C are warming up to electric furnace, and the graphite nodule carburant and 45~60 parts of pig iron that fixed carbon content is 82~85% is added,
0.2~0.6 part of silicon carbide, 0.07~0.15 part of nickel, 0.7~1.2 part of vermiculite and 0.6~0.9 part of niobium are added later；
2) be poured: inovulant is added in the molten iron into step 1, and wherein the additional amount of inovulant is the 0.3 of pig iron gross mass
~0.8wt%；
3) moulding: the molten iron after being poured in step 2 is passed through protection 1~2h of gas, casting is taken out later and platen is made；
4) be heat-treated: platen keep the temperature into 90~110min at 490~510 DEG C, be warming up to 800-850 DEG C keep the temperature 25~
30min, fast cooling to 300~320 DEG C of 40~50min of heat preservation；
5) surface peening: to heat treatment be cooled to room temperature after casting, Ceramics ball carry out bead to get.
Preferably, electric induction furnace is high frequency furnace or middle frequency furnace in the step 1.
Preferably, in the step 1 after the secondary addition pig iron, deslagging processing is carried out.
Preferably, inovulant uses barium silicon inoculant in the step 2, and wherein barium content is 4~6%.
Preferably, it is the mixture of nitrogen, argon gas or both, preferably nitrogen and argon gas that gas is protected in the step 3
It is mixed by 2:3.
The ZrO that ceramic pellet is 67% in the preferred step 52, 31% SiO2And 2% Al2O3Based on field trash
By fusing, atomization, drying, choosing circle, it is sieved into.
Preferably, the hardness of ceramic pellet is 55~63HRC in the step 5.
The utility model has the advantages that
The present invention reduces steel element by adding a certain amount of element silicon in the composition of steel for casting material of clutch compressing disc
Austenite phase field in body, austenite when reducing platen use in its medium alloy steel ferritic in microbedding face occur at high temperature
Volume expansion and cause internal stress and structural deformation amount, cause platen in the case where long term wear, contain in alloy structure
High carbon is being worn because high temperature is graphitized at exposure, and silicon has good deoxidation to molten steel, is conducive to reduce alloy
Carburized layer thickness in steel, the antioxygenic property of steel when improving high temperature, and in a certain range by the control of the silicone content of addition,
It avoids because silicone content is excessively high reducing the toughness of steel, reducing the Acceptable life of clutch compressing disc so that skin decarburization aggravates；It is logical
Addition niobium element is crossed, enables and improves harden ability in sub-eutectoid steel, stablizes rubbing for steel construction by adding the vermiculite of nonmetallic materials
Wipe performance, nickel element cooperation auxiliary element silicon, avoiding element silicon in the alloy is more than certain content, reduce steel construction solderability and
Under conditions of plasticity, forming core is participated on ferrite and cementite interface, the requirement of austenitic structure fluctuation is readily satisfied, mentions
The against corrosion and oxidation-resistance property of high structure, to improve the abrasion resistance properties of automobile clutch pressure plate；At to completion heat
The platen of reason further carries out bead, by answering pressure in alloy surface implantation remnants, to reduce rough surface
Spend and promoted the fatigue limit of platen workpiece surface.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is the present invention one
Divide embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
Every other embodiment obtained, shall fall within the protection scope of the present invention under the premise of creative work.
Embodiment 1:
A kind of preparation process of wear-resistant automobile clutch pressure plate, preparation process include the following steps:
1) melt melting: 15 parts of scrap iron, 0.8 part of tungsten and 10 parts of the pig iron being added into electric induction furnace, heat up to electric furnace
The graphite nodule carburant and 60 parts of pig iron that fixed carbon contents are 83% is added to 1170 DEG C, add later 0.4 part of silicon carbide,
0.09 part of nickel, 1 part of vermiculite and 0.6 part of niobium；
2) be poured: inovulant is added in the molten iron into step 1, and wherein the additional amount of inovulant is pig iron gross mass
0.6wt%；
3) moulding: the molten iron after being poured in step 2 is passed through protection gas 2h, casting is taken out later and platen is made；
4) it is heat-treated: platen being kept the temperature into 100min at 490 DEG C, is warming up to 820 DEG C of heat preservation 25min, fast cooling to 300
DEG C heat preservation 50min；
5) surface peening: to heat treatment be cooled to room temperature after casting, Ceramics ball carry out bead to get.
Electric induction furnace is high frequency furnace in step 1.
In step 1 after the secondary addition pig iron, deslagging processing is carried out.
Inovulant uses barium silicon inoculant in step 2, and wherein barium content is 4%.
It is that nitrogen is mixed with argon gas by 2:3 that gas is protected in step 3 described in step.
The ZrO that ceramic pellet is 67% in step 52, 31% SiO2And 2% Al2O3Based on field trash by fusing,
It is atomized, drying, selects circle, being sieved into.
The hardness of ceramic pellet is 55HRC in step 5 described in step.
Embodiment 2:
A kind of preparation process of wear-resistant automobile clutch pressure plate, preparation process include the following steps:
1) melt melting: 12 parts of scrap iron, 0.6 part of tungsten and 10 parts of the pig iron being added into electric induction furnace, heat up to electric furnace
The graphite nodule carburant and 60 parts of pig iron that fixed carbon contents are 82% is added to 1180 DEG C, add later 0.4 part of silicon carbide,
0.12 part of nickel, 1 part of vermiculite and 0.6 part of niobium；
2) be poured: inovulant is added in the molten iron into step 1, and wherein the additional amount of inovulant is pig iron gross mass
0.6wt%；
3) moulding: the molten iron after being poured in step 2 is passed through protection gas 1h, casting is taken out later and platen is made；
4) it is heat-treated: platen being kept the temperature into 100min at 500 DEG C, is warming up to 820 DEG C of heat preservation 28min, fast cooling to 300
DEG C heat preservation 50min；
5) surface peening: to heat treatment be cooled to room temperature after casting, Ceramics ball carry out bead to get.
Electric induction furnace is high frequency furnace in step 1.
In step 1 after the secondary addition pig iron, deslagging processing is carried out.
Inovulant uses barium silicon inoculant in step 2, and wherein barium content is 5%.
It is that nitrogen is mixed with argon gas by 2:3 that gas is protected in step 3 described in step.
The ZrO that ceramic pellet is 67% in step 52, 31% SiO2And 2% Al2O3Based on field trash by fusing,
It is atomized, drying, selects circle, being sieved into.
The hardness of ceramic pellet is 58HRC in step 5 described in step.
Embodiment 3:
A kind of preparation process of wear-resistant automobile clutch pressure plate, preparation process include the following steps:
1) melt melting: 13 parts of scrap iron, 0.7 part of tungsten and 10 parts of the pig iron being added into electric induction furnace, heat up to electric furnace
The graphite nodule carburant and 60 parts of pig iron that fixed carbon contents are 85% is added to 1170 DEG C, add later 0.4 part of silicon carbide,
0.09 part of nickel, 1.2 parts of vermiculite and 0.6 part of niobium；
2) be poured: inovulant is added in the molten iron into step 1, and wherein the additional amount of inovulant is pig iron gross mass
0.3wt%；
3) moulding: the molten iron after being poured in step 2 is passed through protection gas 1h, casting is taken out later and platen is made；
4) it is heat-treated: platen being kept the temperature into 90min at 490 DEG C, is warming up to 800 DEG C of heat preservation 25min, fast cooling to 320
DEG C heat preservation 50min；
5) surface peening: to heat treatment be cooled to room temperature after casting, Ceramics ball carry out bead to get.
Electric induction furnace is middle frequency furnace in step 1.
In step 1 after the secondary addition pig iron, deslagging processing is carried out.
Inovulant uses barium silicon inoculant in step 2, and wherein barium content is 4%.
It is argon gas that gas is protected in step 3 described in step.
The ZrO that ceramic pellet is 67% in step 52, 31% SiO2And 2% Al2O3Based on field trash by fusing,
It is atomized, drying, selects circle, being sieved into.
The hardness of ceramic pellet is 59HRC in step 5 described in step.
Embodiment 4:
A kind of preparation process of wear-resistant automobile clutch pressure plate, preparation process include the following steps:
1) melt melting: 15 parts of scrap iron, 0.5 part of tungsten and 12 parts of the pig iron being added into electric induction furnace, heat up to electric furnace
The graphite nodule carburant and 60 parts of pig iron that fixed carbon contents are 83% is added to 1170 DEG C, add later 0.2 part of silicon carbide,
0.79 part of nickel, 1 part of vermiculite and 0.9 part of niobium；
2) be poured: inovulant is added in the molten iron into step 1, and wherein the additional amount of inovulant is pig iron gross mass
0.8wt%；
3) moulding: the molten iron after being poured in step 2 is passed through protection gas 2h, casting is taken out later and platen is made；
4) it is heat-treated: platen being kept the temperature into 110min at 500 DEG C, is warming up to 820 DEG C of heat preservation 30min, fast cooling to 310
DEG C heat preservation 40min；
5) surface peening: to heat treatment be cooled to room temperature after casting, Ceramics ball carry out bead to get.
Electric induction furnace is high frequency furnace in step 1.
In step 1 after the secondary addition pig iron, deslagging processing is carried out.
Inovulant uses barium silicon inoculant in step 2, and wherein barium content is 4%.
It is that nitrogen is mixed with argon gas by 2:1 that gas is protected in step 3 described in step.
The ZrO that ceramic pellet is 67% in step 52, 31% SiO2And 2% Al2O3Based on field trash by fusing,
It is atomized, drying, selects circle, being sieved into.
The hardness of ceramic pellet is 63HRC in step 5 described in step.
Embodiment 5:
A kind of preparation process of wear-resistant automobile clutch pressure plate, preparation process include the following steps:
1) melt melting: 13 parts of scrap iron, 0.8 part of tungsten and 10 parts of the pig iron being added into electric induction furnace, heat up to electric furnace
The graphite nodule carburant and 60 parts of pig iron that fixed carbon contents are 85% is added to 1200 DEG C, add later 0.5 part of silicon carbide,
0.07 part of nickel, 1.2 parts of vermiculite and 0.6 part of niobium；
2) be poured: inovulant is added in the molten iron into step 1, and wherein the additional amount of inovulant is pig iron gross mass
0.7wt%；
3) moulding: the molten iron after being poured in step 2 is passed through protection gas 1h, casting is taken out later and platen is made；
4) it is heat-treated: platen being kept the temperature into 100min at 510 DEG C, is warming up to 850 DEG C of heat preservation 25min, fast cooling to 300
DEG C heat preservation 42min；
5) surface peening: to heat treatment be cooled to room temperature after casting, Ceramics ball carry out bead to get.
Electric induction furnace is middle frequency furnace in step 1.
In step 1 after the secondary addition pig iron, deslagging processing is carried out.
Inovulant uses barium silicon inoculant in step 2, and wherein barium content is 5%.
It is nitrogen that gas is protected in step 3 described in step.
The ZrO that ceramic pellet is 67% in step 52, 31% SiO2And 2% Al2O3Based on field trash by fusing,
It is atomized, drying, selects circle, being sieved into.
The hardness of ceramic pellet is 62HRC in step 5 described in step.
To by the preparation-obtained clutch compressing disc of preparation process, carrying out friction and wear behavior survey in above-described embodiment 1~5
Examination, the result of test are as shown in the table:
By above-mentioned test result it is found that having via the automobile clutch pressure plate that preparation process of the present invention obtains good resistance to
Polishing machine.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (7)
1. a kind of preparation process of wear-resistant automobile clutch pressure plate, which is characterized in that preparation process includes the following steps:
1) melt melting: 12-15 parts of scrap iron, 0.5-0.8 parts of tungsten and 10-15 parts of the pig iron are added into electric induction furnace, to electricity
Furnace is warming up to 1150~1200 DEG C and the graphite nodule carburant and 45~60 parts of pig iron that fixed carbon content is 82~85% is added, later
Add 0.2~0.6 part of silicon carbide, 0.07~0.15 part of nickel, 0.7~1.2 part of vermiculite and 0.6~0.9 part of niobium；
2) be poured: inovulant is added in molten iron into step 1, wherein the additional amount of inovulant for pig iron gross mass 0.3~
0.8wt%；
3) moulding: the molten iron after being poured in step 2 is passed through protection 1~2h of gas, casting is taken out later and platen is made；
4) it is heat-treated: platen being kept the temperature into 90~110min at 490~510 DEG C, is warming up to 800-850 DEG C of 25~30min of heat preservation,
Fast cooling is to 300~320 DEG C of 40~50min of heat preservation；
5) surface peening: to heat treatment be cooled to room temperature after casting, Ceramics ball carry out bead to get.
2. a kind of preparation process of wear-resistant automobile clutch pressure plate according to claim 1, it is characterised in that: the step
Electric induction furnace is high frequency furnace or middle frequency furnace in rapid 1.
3. a kind of preparation process of wear-resistant automobile clutch pressure plate according to claim 1, it is characterised in that: the step
In rapid 1 after the secondary addition pig iron, deslagging processing is carried out.
4. a kind of preparation process of wear-resistant automobile clutch pressure plate according to claim 1, it is characterised in that: the step
Inovulant uses barium silicon inoculant in rapid 2, and wherein barium content is 4~6%.
5. a kind of preparation process of wear-resistant automobile clutch pressure plate according to claim 1, it is characterised in that: the step
It is the mixture of nitrogen, argon gas or both that gas is protected in rapid 3, and preferably nitrogen is mixed with argon gas by 2:3.
6. a kind of preparation process of wear-resistant automobile clutch pressure plate according to claim 1, it is characterised in that: the step
The ZrO that ceramic pellet is 67% in rapid 52, 31% SiO2And 2% Al2O3Based on field trash by fusing, atomization, drying,
Choosing circle is sieved into.
7. a kind of preparation process of wear-resistant automobile clutch pressure plate according to claim 1, it is characterised in that: the step
The hardness of ceramic pellet is 55~63HRC in rapid 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811479831.6A CN109371313A (en) | 2018-12-05 | 2018-12-05 | A kind of preparation process of wear-resistant automobile clutch pressure plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811479831.6A CN109371313A (en) | 2018-12-05 | 2018-12-05 | A kind of preparation process of wear-resistant automobile clutch pressure plate |
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|---|---|
| CN109371313A true CN109371313A (en) | 2019-02-22 |
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ID=65375902
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| CN201811479831.6A Pending CN109371313A (en) | 2018-12-05 | 2018-12-05 | A kind of preparation process of wear-resistant automobile clutch pressure plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110480271A (en) * | 2019-08-24 | 2019-11-22 | 浙江瓯赛汽车部件铸造有限公司 | A kind of processing technology of clutch compressing disc |
| CN113444984A (en) * | 2021-06-11 | 2021-09-28 | 安徽海立精密铸造有限公司 | Preparation method of wear-resistant HT300 automobile clutch pressure plate |
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| CN113444984A (en) * | 2021-06-11 | 2021-09-28 | 安徽海立精密铸造有限公司 | Preparation method of wear-resistant HT300 automobile clutch pressure plate |
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Application publication date: 20190222 |