CN110480271A - A kind of processing technology of clutch compressing disc - Google Patents
A kind of processing technology of clutch compressing disc Download PDFInfo
- Publication number
- CN110480271A CN110480271A CN201910786922.2A CN201910786922A CN110480271A CN 110480271 A CN110480271 A CN 110480271A CN 201910786922 A CN201910786922 A CN 201910786922A CN 110480271 A CN110480271 A CN 110480271A
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- Prior art keywords
- parts
- melt
- compressing disc
- processing technology
- clutch compressing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
- Braking Arrangements (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses a kind of processing technologys of clutch compressing disc, include the following steps, S1, melt melting: putting into scrap iron 16-20 parts, 10-15 parts of foundry return, 8-10 parts of the pig iron into electric induction furnace, be warming up to 1380-1440 DEG C of progress melting；S2, casting: 0.2-0.3 parts of 0.2-0.3mm silicon zirconium inovulant being added into the melt of S1, and pouring temperature is 1300-1400 DEG C；Moulding: S3 is passed through protection gas 1-2h to the melt after casting, takes out casting and platen blank is made；Heat treatment: platen blank is kept the temperature 60-70min at 530-540 DEG C, is warming up to 910-920 DEG C of heat preservation 60-70min, fast cooling is to 250-280 DEG C and keeps the temperature 50-60min by S4；Surface cutting: S5 carries out machining to the platen blank after heat treatment and cleans, obtain finished product platen；The cutting fluid used in S5, by mass percentage, including following components: phytic acid 2-3%；Emulsifier op-10 18-20%；Surfactant 7-10%；- 600 6-8% of polyethylene glycol；Ethylene carbonate 1-2%；Adauto Luo product 2-4%；Coolant 6-8%；Antibacterial agent 0.4-0.6%；Surplus is deionized water, and the present invention has the advantages that improve product surface finish.
Description
Technical field
The present invention relates to the technical fields of automobile parts, more specifically, it relates to a kind of processing work of clutch compressing disc
Skill.
Background technique
Platen is a rosette, is the components of automobile clutch, and when normal state closely ties with clutch disc
It closes, becomes an entirety, rotated with engine, and power is passed to gearbox.
Notification number is that the Chinese patent of CN101823140B discloses a kind of production technology of saloon car clutch pressure plate casting,
Its step includes mulling, moulding, furnace charge melting, tapping inoculation, casting, cooling, unpacks, casting cleaning；Wherein, moulder
In sequence, two spray horizontal symmetrical arrangements, casting iron liquid enters sprue, sprue by sprue cup and upper layer cross gate
By entering back into lower layer's cross gate among casting type chamber, then by symmetrically entering type chamber from the downside of type chamber；Furnace charge suede material
Step includes configuration furnace charge and melting, furnace charge configuration quality percentage are as follows: pig iron 20-30%, foundry return 50-60%, steel scrap 20-
30%；Melting carries out Smelting of iron using medium-frequency induction furnace, and smelting temperature is 1460-1550 DEG C；Tapping inoculation process packet
Include iron and the step of inoculation two of silicon barium one time；It is poured in process, pouring temperature is controlled at 1320-1450 DEG C；And it is pouring
Secondary current-following inoculation is carried out with silicon zirconium inovulant when note.
Notification number is that the Chinese patent of CN104830492B discloses a kind of cutting fluid, by the raw material group of following mass parts
At: 2-4 parts of water, 15-30 parts of mineral oil, 1-3 parts of diatomite, 1-3 parts of surfactants；4-7 parts of molybdates, 1-3 parts of boric acid
Salt；50-80 parts of polyether compounds, 2-4 parts of sorbitol monooleates, 2-4 parts of petroleum sodium sulfonates and 1-2 parts of mulser enuatrols；
The polyether compound that wherein polyether compound is organic amine ethylene oxide, propylene oxide, epoxy butane polymerize；Molybdate is molybdic acid
Sodium；Mineral oil is paraffine base crude oil, and emulsifier enuatrol is synthesized by industrial oleic acid and industrial sodium hydroxide in the ratio of 5:2.
Usual clutch compressing disc is after cooling and shaping, it is also necessary to cut metal blank, be allowed to obtain shape, ruler
Very little, precision and all satisfactory process of surface quality, but cutting fluid in the prior art usually provides more letter
Lubrication, the affinity between corrosion inhibition, with cast iron of list are lower, and the lubricant effect played is relatively limited, leads to work pieces process
Surface smoothness it is relatively limited, have much room for improvement.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of processing technology of clutch compressing disc,
Have the advantages that improve the surface smoothness of work pieces process.
To achieve the above object, the present invention provides the following technical scheme that
A kind of processing technology of clutch compressing disc, includes the following steps,
Melt melting: S1 puts into scrap iron 16-20 parts, 10-15 parts of foundry return, 8-10 parts of the pig iron, heating into medium-frequency induction furnace
To 1380-1440 DEG C of progress melting；
Casting: S2 0.2-0.3 parts of 0.2-0.3mm silicon zirconium inovulant, pouring temperature 1300-1400 is added into the melt of S1
℃；
Moulding: S3 is passed through protection gas 1-2h to the melt after casting, takes out casting and platen blank is made；
Heat treatment: platen blank is kept the temperature 60-70min at 530-540 DEG C, is warming up to 910-920 DEG C of heat preservation 60- by S4
70min, fast cooling is to 250-280 DEG C and keeps the temperature 50-60min；
Surface cutting: S5 carries out machining to the platen blank after heat treatment and cleans, obtain finished product platen；
The cutting fluid used in S5, by mass percentage, including following components:
Phytic acid 2-3%；
Emulsifier op-10 18-20%；
Surfactant 7-10%；
- 600 6-8% of polyethylene glycol；
Ethylene carbonate 1-2%；
Adauto Luo product 2-4%；
Coolant 6-8%；
Antibacterial agent 0.4-0.6%；
Surplus is deionized water.
By using above-mentioned technical proposal, reduced suffered by casting controlling ratio made of molten iron, heat treatment temperature
External carbuncle, thermal stress and structural stress, the final quality for guaranteeing platen improves the intensity and thermal diffusivity of platen, and at this
Under raw material proportioning and technique, the product excellent radiation performance of acquisition, any surface finish, flaw are few.
Methenamine is one kind to inhibit metal anode corrosion inhibiter, can be improved the corrosion resistance of metal works.And crow
Lip river tropine generates decomposition under the acid effect of phytic acid, makes that part of it is broken down into ammonia and formaldehyde is soluble in water, and ammonia
There is stronger reduction with formaldehyde, oxidation and rustization quickly occurs due to high temperature during the cutting process to avoid workpiece.This
Outside, under the reduction of ammonia and formaldehyde, the bacterium bred in cutting fluid can effectively be killed.Phytic acid is providing acid effect
While, moreover it is possible to play the role of antirust, cleaning, to improve the finish of metal surface.
Polyethylene glycol -600 has good wetting lubricant effect, and has well with the platen blank prepared under the technique
Affinity, and stable lubricating film can be formed on its surface, ethylene carbonate can enhance the stability of lubricating film, prevent
Cutter drawing squeezes out lubricating film, and resists the friction between cutter and platen blank, to reach better lubricant effect, reduces
And cutting force and cutting heat, to further increase the surface smoothness of clutch compressing disc.
In addition, emulsifier op-10 has good emulsifiability, it can be improved the dispersibility of each component and improve cutting fluid
Stability and surfactant collective effect under, the stability of lubricating film can be further increased, and improve clutch indirectly
The surface smoothness of device platen.
Further, melt melting: S1 puts into scrap iron 8-10 parts, 18-20 parts of foundry return, life into medium-frequency induction furnace
35-45 parts of iron, 0.4-0.6 parts of silicon carbide are warming up to 1450-1520 DEG C of progress melting.
By using above-mentioned technical proposal, by the addition of silicon carbide, so that a certain amount of element silicon is added in composition of steel,
The austenite phase field in steel ferritic is reduced, reduces austenite when platen uses in its medium alloy steel ferritic in microbedding face in high temperature
Lower generating body product expands and causes internal stress and structural deformation amount, causes platen in the case where long term wear, alloy structure contains
The high carbon having is being worn at exposure because high temperature is graphitized, and silicon has good deoxidation to molten steel, is conducive to reduce
Carburized layer thickness in steel alloy, the antioxygenic property of steel when improving high temperature.
Further, melt melting: S1 puts into scrap iron 8-10 parts, 18-20 parts of foundry return, life into medium-frequency induction furnace
35-45 parts of iron, 0.4-0.6 parts of silicon carbide, 0.1-0.15 parts of nickel are warming up to 1450-1520 DEG C of progress melting.
By using above-mentioned technical proposal, by nickel to the mate-assist of silicon, it is more than certain for can be avoided silicon in the alloy
Content forms forming core on ferrite and cementite interface, readily satisfies the requirement of austenitic structure fluctuation, improve structure
Against corrosion and oxidation-resistance property, to improve the wearability of clutch compressing disc.
Further, melt melting: S1 puts into scrap iron 8-10 parts, 18-20 parts of foundry return, life into medium-frequency induction furnace
35-45 parts of iron, 0.8-1 parts of vermiculite are warming up to 1450-1520 DEG C of progress melting.
The frictional behaviour of steel construction can be stablized by adding vermiculite by using above-mentioned technical proposal.
Further, melt melting: S1 puts into scrap iron 8-10 parts, 18-20 parts of foundry return, life into medium-frequency induction furnace
35-45 parts of iron, 0.7-0.9 parts of niobium are warming up to 1450-1520 DEG C of progress melting.
By using above-mentioned technical proposal, by the addition of niobium, so that the harden ability of sub-eutectoid steel is improved, to make
The hardness for obtaining clutch compressing disc is improved.
Further, the surfactant uses propylene glycol Epoxy oil acid esters.
By using above-mentioned technical proposal, propylene glycol Epoxy oil acid esters is a kind of nonionic surfactant, is had good
Dispersibility while being capable of providing good wetting and lubricating action so that cutting liquid system has higher stability.This
Outside, propylene glycol Epoxy oil acid esters can be attached to the surface of clutch compressing disc with reaction of phytic acid, reaction product and improve it
Rust-preventing characteristic, and then further increase the surface smoothness of clutch pressure platen.
Further, the coolant uses ethylene glycol phenyl ether.
By using above-mentioned technical proposal, ethylene glycol phenyl ether can cool down the clutch compressing disc in cutting, and have
There is good thermal stability.Ethylene glycol phenyl ether also has the ability that hydrogen bond is formed with water and ehter bond, therefore it can reduce cream
The HLB value of agent OP-10, to increase the dispersibility of emulsifier op-10 and improve the stability of cutting fluid emulsion, and then
Connect the surface smoothness for improving clutch compressing disc.
Further, the antibacterial agent uses isothiazolinone.
By using above-mentioned technical proposal, after isothiazolinone is contacted with microorganism, can promptly irreversibly always its
Growth has good antibacterial and bactericidal effect so as to cause the death of microbial cell, and has and do not generate remaining spy
Point.
In conclusion the invention has the following advantages:
1. ratio, heat treatment temperature made of control molten iron are answered to reduce external carbuncle suffered by casting, thermal stress and tissue
Power, the final quality for guaranteeing platen, improves the intensity and thermal diffusivity of platen, and under the raw material proportioning and technique, acquisition
Product excellent radiation performance, any surface finish, flaw are few.
2. the platen blank prepared by this special process and raw material, cooperates this specific cutting fluid, can be effective
Guarantee the surface smoothness and intensity of clutch compressing disc.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
Below in conjunction with drawings and examples, invention is further described in detail.
Embodiment
Embodiment 1
A kind of processing technology of clutch compressing disc, as shown in Figure 1, comprising the following steps:
S1, melt melting: into medium-frequency induction furnace put into 16 parts of scrap iron, 10 parts of foundry return, 8 parts of the pig iron, 0.4 part of silicon carbide,
0.1 part of nickel, 0.8 part of vermiculite and 0.7 part of niobium are warming up to 1380 DEG C of progress meltings；
S2, casting: 0.2 part of 0.2mm silicon zirconium inovulant being added into the melt of S1, and pouring temperature is 1300 DEG C；
Moulding: S3 is passed through protection gas 1h to the melt after casting, takes out casting and platen blank is made；
Heat treatment: platen blank is kept the temperature 60min at 530 DEG C, is warming up to 910 DEG C of heat preservation 60min, fast cooling to 250 by S4
DEG C and keep the temperature 50min；
Surface cutting: S5 carries out machining to the platen blank after heat treatment and cleans, obtain finished product platen.
By mass percentage, raw material is as shown in table 1 for cutting fluid used by machining in S5, and surfactant
Using propylene glycol Epoxy oil acid esters, coolant uses ethylene glycol phenyl ether, and antibacterial agent uses isothiazolinone.
Embodiment 2
A kind of processing technology of clutch compressing disc, comprising the following steps:
S1, melt melting: into medium-frequency induction furnace put into 18 parts of scrap iron, 13 parts of foundry return, 9 parts of the pig iron, 0.5 part of silicon carbide,
0.1 part of nickel, 0.9 part of vermiculite and 0.8 part of niobium are warming up to 1400 DEG C of progress meltings；
S2, casting: 0.2 part of 0.3mm silicon zirconium inovulant being added into the melt of S1, and pouring temperature is 1350 DEG C；
Moulding: S3 is passed through protection gas 1.5h to the melt after casting, takes out casting and platen blank is made；
Heat treatment: platen blank is kept the temperature 60min at 530 DEG C, is warming up to 910 DEG C of heat preservation 60min, fast cooling to 260 by S4
DEG C and keep the temperature 60min；
Surface cutting: S5 carries out machining to the platen blank after heat treatment and cleans, obtain finished product platen.
By mass percentage, raw material is as shown in table 1 for cutting fluid used by machining in S5.
Embodiment 3
A kind of processing technology of clutch compressing disc, comprising the following steps:
S1, melt melting: into medium-frequency induction furnace put into 20 parts of scrap iron, 15 parts of foundry return, 10 parts of the pig iron, 0.6 part of silicon carbide,
0.15 part of nickel, 1 part of vermiculite and 0.9 part of niobium are warming up to 1440 DEG C of progress meltings；
S2, casting: 0.3 part of 0.3mm silicon zirconium inovulant being added into the melt of S1, and pouring temperature is 1400 DEG C；
Moulding: S3 is passed through protection gas 2h to the melt after casting, takes out casting and platen blank is made；
Heat treatment: platen blank is kept the temperature 70min at 540 DEG C, is warming up to 920 DEG C of heat preservation 70min, fast cooling to 280 by S4
DEG C and keep the temperature 60min；
Surface cutting: S5 carries out machining to the platen blank after heat treatment and cleans, obtain finished product platen.
By mass percentage, raw material is as shown in table 1 for cutting fluid used by machining in S5.
Embodiment 4
The difference from example 2 is that surfactant uses lauryl sodium sulfate.
Comparative example
Comparative example 1
The difference from example 2 is that removing coolant and replacing with the deionized water of equivalent
Comparative example 2
The difference from example 2 is that removing ethylene carbonate and replacing with the deionized water of equivalent.
Comparative example 3
Referring to the platen blank that application publication number is prepared for technique disclosed in CN107755623A, and using in embodiment 2
The cutting fluid of formula rate cuts platen blank.
Performance detection test
Finish comparison: the clutch compressing disc of embodiment 1-4 and comparative example 1-3 are carried out by way of exhibition to upset sequence pendulum
It puts, allows staff to score each clutch compressing disc with 1.0-10.0 points of systems, finally make even to each clutch compressing disc
Respectively, appraisal result is as shown in table 2.
Rust-preventing characteristic test: the test method of 5.7.5 monolithic rust-preventing characteristic in reference GB/T 6144-2010 " synthetic cutting fluid ",
Rust-preventing characteristic grade is as shown in table 2.
1 cutting fluid formula table (%) of table
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Phytic acid | 2 | 2.5 | 3 | 2.5 | 2.5 | 2.5 | 2.5 |
| Emulsifier op-10 | 18 | 19 | 20 | 19 | 19 | 19 | 19 |
| Surfactant | 7 | 8 | 10 | 8 | 8 | 8 | 8 |
| Polyethylene glycol -600 | 6 | 7 | 8 | 7 | 7 | 7 | 7 |
| Ethylene carbonate | 1 | 1.5 | 2 | 1.5 | 1.5 | 0 | 1.5 |
| Adauto Luo product | 2 | 3 | 4 | 3 | 3 | 3 | 3 |
| Coolant | 6 | 7 | 8 | 7 | 0 | 7 | 7 |
| Antibacterial agent | 0.4 | 0.5 | 0.6 | 0.5 | 0.5 | 0.5 | 0.5 |
| Deionized water | 57.6 | 51.5 | 44.4 | 51.5 | 58.5 | 53 | 51.5 |
2 performance test table of table
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Finish score value | 9.8 | 9.9 | 9.9 | 9.4 | 9.6 | 9.0 | 8.7 |
| Antirust grade | A grades | A grades | A grades | B grades | A grades | A grades | C grades |
This specific embodiment is only explanation of the invention, is not limitation of the present invention, and those skilled in the art exist
It can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as in the present invention
Scope of the claims in all by the protection of Patent Law.
Claims (8)
1. a kind of processing technology of clutch compressing disc, it is characterised in that: include the following steps,
Melt melting: S1 puts into scrap iron 16-20 parts, 10-15 parts of foundry return, 8-10 parts of the pig iron, heating into medium-frequency induction furnace
To 1380-1440 DEG C of progress melting；
Casting: S2 0.2-0.3 parts of 0.2-0.3mm silicon zirconium inovulant, pouring temperature 1300-1400 is added into the melt of S1
℃；
Moulding: S3 is passed through protection gas 1-2h to the melt after casting, takes out casting and platen blank is made；
Heat treatment: platen blank is kept the temperature 60-70min at 530-540 DEG C, is warming up to 910-920 DEG C of heat preservation 60- by S4
70min, fast cooling is to 250-280 DEG C and keeps the temperature 50-60min；
Surface cutting: S5 carries out machining to the platen blank after heat treatment and cleans, obtain finished product platen；
The cutting fluid used in S5, by mass percentage, including following components:
Phytic acid 2-3%；
Emulsifier op-10 18-20%；
Surfactant 7-10%；
- 600 6-8% of polyethylene glycol；
Ethylene carbonate 1-2%；
Adauto Luo product 2-4%；
Coolant 6-8%；
Antibacterial agent 0.4-0.6%；
Surplus is deionized water.
2. a kind of processing technology of clutch compressing disc according to claim 1, it is characterised in that: S1, melt melting: Xiang Zhong
Scrap iron 8-10 parts, 18-20 parts of foundry return, 35-45 parts of the pig iron, 0.4-0.6 parts of silicon carbide are put into frequency electric induction furnace, are warming up to
1450-1520 DEG C of progress melting.
3. a kind of processing technology of clutch compressing disc according to claim 2, it is characterised in that: S1, melt melting: Xiang Zhong
Scrap iron 8-10 parts, 18-20 parts of foundry return, 35-45 parts of the pig iron, 0.4-0.6 parts of silicon carbide, nickel 0.1- are put into frequency electric induction furnace
0.15 part, it is warming up to 1450-1520 DEG C of progress melting.
4. a kind of processing technology of clutch compressing disc according to claim 1, it is characterised in that: S1, melt melting: Xiang Zhong
Scrap iron 8-10 parts, 18-20 parts of foundry return, 35-45 parts of the pig iron, 0.8-1 parts of vermiculite are put into frequency electric induction furnace, are warming up to 1450-
1520 DEG C of progress meltings.
5. a kind of processing technology of clutch compressing disc according to claim 1, it is characterised in that: S1, melt melting: Xiang Zhong
Scrap iron 8-10 parts, 18-20 parts of foundry return, 35-45 parts of the pig iron, 0.7-0.9 parts of niobium are put into frequency electric induction furnace, are warming up to 1450-
1520 DEG C of progress meltings.
6. a kind of processing technology of clutch compressing disc according to claim 1, it is characterised in that: the surfactant is adopted
With propylene glycol Epoxy oil acid esters.
7. a kind of processing technology of clutch compressing disc according to claim 1, it is characterised in that: the coolant uses second
Glycol phenylate.
8. a kind of processing technology of clutch compressing disc according to claim 1, it is characterised in that: the antibacterial agent is using different
Thiazolinone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910786922.2A CN110480271A (en) | 2019-08-24 | 2019-08-24 | A kind of processing technology of clutch compressing disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910786922.2A CN110480271A (en) | 2019-08-24 | 2019-08-24 | A kind of processing technology of clutch compressing disc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110480271A true CN110480271A (en) | 2019-11-22 |
Family
ID=68553751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910786922.2A Pending CN110480271A (en) | 2019-08-24 | 2019-08-24 | A kind of processing technology of clutch compressing disc |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112247123A (en) * | 2020-10-24 | 2021-01-22 | 安徽省含山县皖中减速机械有限公司 | Treatment process for improving strength of turbine of speed reducer |
| CN114273857A (en) * | 2021-12-17 | 2022-04-05 | 绍兴力欣液压件有限公司 | Preparation process of clutch booster |
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| US20110289748A1 (en) * | 2004-04-29 | 2011-12-01 | Honeywell International Inc. | Compositions containing tetrafluoropropene and carbon dioxide |
| CN103468382A (en) * | 2013-08-30 | 2013-12-25 | 广州机械科学研究院有限公司 | Boron-free chlorine-free formaldehyde-free microemulsified cutting fluid and application thereof |
| CN103710118A (en) * | 2013-11-28 | 2014-04-09 | 安徽速克达车业有限公司 | Water-based cutting cooling antirust liquid and preparation method thereof |
| CN104226912A (en) * | 2014-08-29 | 2014-12-24 | 吴江市液铸液压件铸造有限公司 | Casting technology of pressure plate |
| CN109371313A (en) * | 2018-12-05 | 2019-02-22 | 含山县天宇机械铸造厂 | A kind of preparation process of wear-resistant automobile clutch pressure plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1422938A (en) * | 2001-12-04 | 2003-06-11 | 顾德钧 | Lubricating and cooling agent |
| US20110289748A1 (en) * | 2004-04-29 | 2011-12-01 | Honeywell International Inc. | Compositions containing tetrafluoropropene and carbon dioxide |
| CN101255375A (en) * | 2008-04-22 | 2008-09-03 | 大连三达奥克化学股份有限公司 | Water-based cutting fluid special for automobile clutch pressure plate vertical lathe and production method |
| CN103468382A (en) * | 2013-08-30 | 2013-12-25 | 广州机械科学研究院有限公司 | Boron-free chlorine-free formaldehyde-free microemulsified cutting fluid and application thereof |
| CN103710118A (en) * | 2013-11-28 | 2014-04-09 | 安徽速克达车业有限公司 | Water-based cutting cooling antirust liquid and preparation method thereof |
| CN104226912A (en) * | 2014-08-29 | 2014-12-24 | 吴江市液铸液压件铸造有限公司 | Casting technology of pressure plate |
| CN109371313A (en) * | 2018-12-05 | 2019-02-22 | 含山县天宇机械铸造厂 | A kind of preparation process of wear-resistant automobile clutch pressure plate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112247123A (en) * | 2020-10-24 | 2021-01-22 | 安徽省含山县皖中减速机械有限公司 | Treatment process for improving strength of turbine of speed reducer |
| CN114273857A (en) * | 2021-12-17 | 2022-04-05 | 绍兴力欣液压件有限公司 | Preparation process of clutch booster |
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