CN106736301A - A kind of forming method of press-fitting type bimetallic composite brake drum - Google Patents
A kind of forming method of press-fitting type bimetallic composite brake drum Download PDFInfo
- Publication number
- CN106736301A CN106736301A CN201710018423.XA CN201710018423A CN106736301A CN 106736301 A CN106736301 A CN 106736301A CN 201710018423 A CN201710018423 A CN 201710018423A CN 106736301 A CN106736301 A CN 106736301A
- Authority
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- China
- Prior art keywords
- cast iron
- brake drum
- iron pipe
- mild steel
- press
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- 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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- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/10—Drums for externally- or internally-engaging brakes
Abstract
A kind of forming method of press-fitting type bimetallic composite brake drum, it is related to brake drum forming method technical field, one mild steel steel pipe is made a brake drum overcoat by the method for being stretched using cold-drawn first, a cast iron pipe is made with the method for centrifugal casting, cast iron pipe is sized to, and make the external diameter of cast iron pipe more than the internal diameter of mild steel shell, and some grooves are processed in cast iron pipe outer wall, then epoxy resin adhesive is coated in cast iron pipe outer wall and in groove, and cast iron pipe is pressed into the brake drum overcoat that mild steel is made with hydraulic press, form the bimetallic composite brake drum of two kinds of materials of composite low-carbon steel and cast iron, brake drum can install after placing 24 hours and use.The moulding process of bimetallic composite brake drum of the present invention is simple, efficiency high, and it is firm that two kinds of materials of brake drum are combined, product safety, durable.
Description
Technical field
The present invention relates to the forming method technical field of brake drum, and in particular to a kind of shaping of bimetallic composite brake drum
Method.
Background technology
Transportation flourishes for auto industry is filled with vigor, auto industry to develop into auto parts and components special
It is not that developing for foundry enterprise provides huge development space.Brake drum is consumed as the key wear in brake system of car
Part, due to its compact conformation, dependable performance, the advantages of braking power is big, market demand is huge.
The brake drum material for using currently on the market is mainly divided to two classes, and a class is cast iron（For big-and-middle-sized vehicle）, a class
It is aluminum matrix composite（It is mainly used in dilly）.The reason for using cast iron as most of automobile-used brake drum material, essentially consists in
Its preferable casting character, it is easy to machining, wearability and thermal conductivity are all preferable and cheap.But it also has one
Fixed shortcoming, mainly thermal fatigue resistance are poor, and easily tired and then fracture is scrapped；Weight is bigger than normal, is reduced as far as possible current
Vehicle weight and in terms of saving fuel oil, it is outdated, it is necessary to improve.
The country has occurred in that several bi-metal brake drum new technologies at present：When the 1st, casting a steel band is inserted in normal danger
To improve its toughness, this method quality conformance is difficult control, and the raising of its toughness is also limited, fails radical change its safety
Property.2nd, outer layer manufactures a shell with low carbon steel plate, is then directly poured into Manufactured shell with the method for centrifugal casting,
This method solves toughness and wear-resisting sex chromosome mosaicism very well, abroad existing extensive utilization, and it has the disadvantage quality control difficulties,
Low production efficiency, high cost.3rd, outer layer manufactures a shell with low carbon steel plate, and cylinder iron piecemeal makes and uses riveting or spiral shell internal layer
Tethering the method for connecing makes the combination of inner and outside together, and this technology also solves security and wear-resisting sex chromosome mosaicism well, but it is given birth to
Production. art is complicated, production efficiency is lower, investment is big, cost is higher and pts wt increases.Due to the shortcoming of above technology, cause
These technologies commercially available could not be promoted the use at home.
The content of the invention
It is an object of the invention to provide two kinds of moulding process of the brake drum of metal material of a kind of composite low-carbon steel and cast iron,
Simplified flowsheet, reduces cost, it is ensured that requirement of the obtained composite brake drum to high-wearing feature and high security.
To achieve the above object, the technical scheme is that：A kind of shaping side of press-fitting type bimetallic composite brake drum
Method, comprises the following steps：
（1）, with cold-drawn stretch method by the mild steel steel pipe that wall thickness is 7mm, be made a wall thickness for 4mm, be highly
330mm, largest outer diameter is the mild steel shell of 483mm, used as brake drum overcoat；
（2）, molten iron melted, and molten iron is incubated at 1280 ~ 1290 DEG C, molten iron is cast as using horizontal centrifugal casting machine
One cast iron pipe；Wherein, the rotating speed of horizontal centrifugal casting machine is 600 ~ 750r/min in casting process；
（3）, the cast iron pipe that casting is completed is processed into internal diameter for 460mm, thickness are 8mm, a height of 300mm, make the outer of cast iron pipe
Footpath is more than the internal diameter of mild steel shell, and some grooves are processed on the outer wall of cast iron pipe；
（4）, mild steel shell fix on a hydraulic press, on the outer wall of cast iron pipe and it is recessed grain in coating adhering with epoxy resin
Agent, and cast iron pipe is pressed into mild steel shell with hydraulic press；
（5）, after cast iron pipe is pressed completely into, cast iron pipe and mild steel shell are combined as a whole to form the compound system of the bimetallic
Dynamic drum, after removing brake drum and place 24 hours, you can installation is used.
Further, step（2）In, the mass percent composition of the molten iron is：C：3.48~3.55%、Si：1.63%、
Mn：0.67~0.72%、Cr：0.46%、P：0.4 ~ 0.7%, S is no more than 0.02%, balance of Fe.
Step（3）In, a groove is processed at interval of 20mm along cast iron pipe length direction on the outer wall of the cast iron pipe,
Each groove is annularly set.
The technical solution adopted by the present invention has the following advantages that and effect：
Using press-fit forming method, by the brake drum interliner of the brake drum overcoat of low-carbon steel material and cast iron quality one
Rise, form bimetallic composite brake drum of the invention, whole moulding process is simple, efficiency high, and bimetallic of the invention is multiple
Close brake drum the toughness combination of the anti-wear performance of cast iron and steel alloy is got up, it is product safety, durable.
Using interference fit and bonding agent method used at the same time, mild steel shell is set to be integrated as one with cast iron pipe liner
Body, it is firm that faying face is combined.
Process the groove of suitable shape on the outer wall of cast iron pipe, groove can increase connecing for binding agent and shell steel inwall
Contacting surface is accumulated, and plays more preferable anchoring effect.
Whole design, the old brake drum of new brake convexity-ratio of the invention（Whole cast irons）Weight saving at least 35%, service life
It is enhanced about more than once and never crushes.In addition, simple production process of the present invention, with low cost, popularizing application prospect is wide.
Brief description of the drawings
Fig. 1 is a certain state diagram that be pressed into for cast iron pipe during mild steel shell by the present invention；
Fig. 2 is the state diagram that cast iron pipe is completely forced into the present invention both combinations after mild steel shell；
Marked in figure：1st, mild steel shell, 2, cast iron pipe, 3, recessed grain.
Specific embodiment
A kind of forming method of press-fitting type bimetallic composite brake drum, comprises the following steps：
（1）, with cold-drawn stretch method by the mild steel steel pipe that wall thickness is 7mm, be made a wall thickness for 4mm, be highly
330mm, largest outer diameter is the mild steel shell of 483mm, used as brake drum overcoat；
（2）, molten iron melted, and molten iron is incubated at 1280 ~ 1290 DEG C, molten iron is cast as using horizontal centrifugal casting machine
One cast iron pipe；Wherein, the rotating speed of horizontal centrifugal casting machine is 600 ~ 750r/min in casting process；
（3）, the cast iron pipe that casting is completed is processed into internal diameter for 460mm, thickness are 8mm, a height of 300mm, make the outer of cast iron pipe
Footpath is more than the internal diameter of mild steel shell, and some grooves are processed on the outer wall of cast iron pipe；
（4）, mild steel shell fix on a hydraulic press, on the outer wall of cast iron pipe and it is recessed grain in coating adhering with epoxy resin
Agent, and cast iron pipe is pressed into mild steel shell with hydraulic press；
（5）, after cast iron pipe is pressed completely into, cast iron pipe and mild steel shell are combined as a whole to form the compound system of the bimetallic
Dynamic drum, after removing brake drum and place 24 hours, you can installation is used.
Step（2）In, the mass percent composition of the molten iron is：C：3.48~3.55%、Si：1.63%、Mn：0.67~
0.72%、Cr：0.46%、P：0.4 ~ 0.7%, S is no more than 0.02%, balance of Fe.
Step（2）In the casting process of cast iron pipe, after molten iron solidifies completely, first chance is as cold as 500 DEG C, then cast iron
Pipe releases cylinder body, and air cooling carries out step afterwards（3）Operation.A diameter of 500mm of horizontal centrifugal casting machine used.
Step（3）In, along cast iron length of tube on the outer wall of the cast iron pipe（Namely height）Direction processes at interval of 20mm
Go out a groove, each groove is annularly set.The specification of groove is width 10mm, groove depth 1mm.
Step（1）In, mild steel uses 08 steel or 10 steel.
Claims (3)
1. a kind of forming method of press-fitting type bimetallic composite brake drum, it is characterised in that：Comprise the following steps：
（1）, with cold-drawn stretch method by the mild steel steel pipe that wall thickness is 7mm, be made a wall thickness for 4mm, be highly
330mm, largest outer diameter is the mild steel shell of 483mm, used as brake drum overcoat；
（2）, molten iron melted, and molten iron is incubated at 1280 ~ 1290 DEG C, molten iron is cast as using horizontal centrifugal casting machine
One cast iron pipe；Wherein, the rotating speed of horizontal centrifugal casting machine is 600 ~ 750r/min in casting process；
（3）, the cast iron pipe that casting is completed is processed into internal diameter for 460mm, thickness are 8mm, a height of 300mm, make the outer of cast iron pipe
Footpath is more than the internal diameter of mild steel shell, and some grooves are processed on the outer wall of cast iron pipe；
（4）, mild steel shell fix on a hydraulic press, on the outer wall of cast iron pipe and it is recessed grain in coating adhering with epoxy resin
Agent, and cast iron pipe is pressed into mild steel shell with hydraulic press；
（5）, after cast iron pipe is pressed completely into, cast iron pipe and mild steel shell are combined as a whole to form the compound system of the bimetallic
Dynamic drum, after removing brake drum and place 24 hours, you can installation is used.
2. a kind of forming method of press-fitting type bimetallic composite brake drum as claimed in claim 1, it is characterised in that：Step
（2）In, the mass percent composition of the molten iron is：C：3.48~3.55%、Si：1.63%、Mn：0.67~0.72%、Cr：
0.46%、P：0.4 ~ 0.7%, S is no more than 0.02%, balance of Fe.
3. a kind of forming method of press-fitting type bimetallic composite brake drum as claimed in claim 1, it is characterised in that：Step
（3）In, a groove is processed at interval of 20mm along cast iron pipe length direction on the outer wall of the cast iron pipe, each groove is in
Ring-type is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710018423.XA CN106736301B (en) | 2017-01-11 | 2017-01-11 | A kind of forming method of press-fitting type bimetallic composite brake drum |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710018423.XA CN106736301B (en) | 2017-01-11 | 2017-01-11 | A kind of forming method of press-fitting type bimetallic composite brake drum |
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| CN106736301A true CN106736301A (en) | 2017-05-31 |
| CN106736301B CN106736301B (en) | 2018-12-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035795A (en) * | 2017-06-20 | 2017-08-11 | 彭松桂 | High-performance truck bi-metal brake drum |
| CN111687394A (en) * | 2020-05-19 | 2020-09-22 | 赵纪明 | Preparation method of corrosion-resistant ductile malleable cast iron material |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6530458B1 (en) * | 1996-02-28 | 2003-03-11 | Rau, Iii Charles B. | Lightweight reinforced brake drum and method for making lightweight reinforced brake drum |
| CN2871966Y (en) * | 2006-01-23 | 2007-02-21 | 谭富春 | Double-layer metal structural braking hub of automobile |
| CN201166067Y (en) * | 2008-01-25 | 2008-12-17 | 王永忠 | Novel brake hub |
| CN201215148Y (en) * | 2008-05-28 | 2009-04-01 | 胡青迪 | Automobile dual metal brake hub |
| CN102322490A (en) * | 2011-06-20 | 2012-01-18 | 嘉兴四通车轮股份有限公司 | Manufacturing method of brake drum of duplex metal composite automobile |
| CN202176641U (en) * | 2011-07-08 | 2012-03-28 | 福建畅丰车桥制造有限公司 | Bimetal layer brake drum with groove on inner ring |
| CN102601337A (en) * | 2012-03-09 | 2012-07-25 | 河南科技大学 | Shaping method of bimetallic composite-material brake drum |
-
2017
- 2017-01-11 CN CN201710018423.XA patent/CN106736301B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6530458B1 (en) * | 1996-02-28 | 2003-03-11 | Rau, Iii Charles B. | Lightweight reinforced brake drum and method for making lightweight reinforced brake drum |
| CN2871966Y (en) * | 2006-01-23 | 2007-02-21 | 谭富春 | Double-layer metal structural braking hub of automobile |
| CN201166067Y (en) * | 2008-01-25 | 2008-12-17 | 王永忠 | Novel brake hub |
| CN201215148Y (en) * | 2008-05-28 | 2009-04-01 | 胡青迪 | Automobile dual metal brake hub |
| CN102322490A (en) * | 2011-06-20 | 2012-01-18 | 嘉兴四通车轮股份有限公司 | Manufacturing method of brake drum of duplex metal composite automobile |
| CN202176641U (en) * | 2011-07-08 | 2012-03-28 | 福建畅丰车桥制造有限公司 | Bimetal layer brake drum with groove on inner ring |
| CN102601337A (en) * | 2012-03-09 | 2012-07-25 | 河南科技大学 | Shaping method of bimetallic composite-material brake drum |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035795A (en) * | 2017-06-20 | 2017-08-11 | 彭松桂 | High-performance truck bi-metal brake drum |
| CN111687394A (en) * | 2020-05-19 | 2020-09-22 | 赵纪明 | Preparation method of corrosion-resistant ductile malleable cast iron material |
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| Publication number | Publication date |
|---|---|
| CN106736301B (en) | 2018-12-04 |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Wenyan Inventor after: Huang Yabo Inventor after: Liu Jiyao Inventor after: Lu Gao Inventor after: Guo Leiming Inventor after: Xie Jingpei Inventor after: Li Jiwen Inventor after: Wang Aiqin Inventor after: Li Luoli Inventor before: Huang Yabo Inventor before: Wang Wenyan Inventor before: Liu Jiyao Inventor before: Lu Gao Inventor before: Guo Leiming Inventor before: Xie Jingpei Inventor before: Li Jiwen Inventor before: Wang Aiqin Inventor before: Li Luoli |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
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Application publication date: 20170531 Assignee: Zhumadian forever Machinery Manufacturing Co., Ltd. Assignor: Henan University of Science and Technology Contract record no.: X2019980000314 Denomination of invention: Forming method of press-fit double-metal compound brake drum Granted publication date: 20181204 License type: Common License Record date: 20191029 |