CN108611482A - A kind of heat treatment method of ultra-thin major diameter waveform spring washer - Google Patents
A kind of heat treatment method of ultra-thin major diameter waveform spring washer Download PDFInfo
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- CN108611482A CN108611482A CN201611140848.XA CN201611140848A CN108611482A CN 108611482 A CN108611482 A CN 108611482A CN 201611140848 A CN201611140848 A CN 201611140848A CN 108611482 A CN108611482 A CN 108611482A
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- heat treatment
- washer
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- major diameter
- hanger
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- 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
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
It is of the present invention：A kind of heat treatment method of ultra-thin major diameter waveform spring gasket features, belongs to manufacturing technology technical field.Its technical solution includes：1) the fixture design and parts fixation method of parts fixation are provided；2) suitable heat treating regime is provided.The present invention is practically applicable to the heat treatment process of ultra-thin major diameter waveform spring gasket features.The heat treatment process that ultra-thin major diameter waveform spring washer is carried out using method of the present invention, is had the following advantages：1. the structure of fixture for heat treatment is simple, practical, do not limited by the size variation of gasket diameters size；2. being not required to be corrected after washer heat treatment；3. work-handling is simply, conveniently.
Description
Technical field：
The present invention relates to a kind of heat treatment methods of machine components manufacture, are mainly used in ultra-thin major diameter waveform spring pad
The heat treatment process of circle.Belong to manufacturing technology technical field.
Background technology：
Signified ultra-thin major diameter waveform spring washer, architectural characteristic are in the present invention：Washer section thickness δ=
0.2mm~0.5mm, washer outside diameter D=Ф 80mm~Ф 250mm.
Waveform spring washer is shaped under soft state by mould punching using 60Si2Mn spring steels, is then passed through
Be heat-treated the elastic property that (quenching+tempering) obtains required by waveform spring washer (usually need to be by material heat treatment to hardness
45HRC~51HRC).
Waveform spring washer generally uses cold-rolled strip or cold-rolled steel sheet to manufacture, steel plate thickness δ=0.2mm~0.5mm.By
Relatively thin in material thickness, as gasket diameters increase, heat treatment vessel is also easy to produce deformation, causes washer waveform not meet pattern and wants
It asks, product qualification rate is relatively low.In order to solve the problems, such as such part heat-treatment distortion, folder identical with part shape is typically processed
Tool is pushed down washer and is heat-treated.But it is special since waveform spring washer format diameter is differed from Ф 40mm to Ф 250mm
Tooling needs to manufacture the shape-setting clamp of different diameter specifications.In the case where production batch is insufficient to big, tooling size specification is numerous
It is cause manufacturing cost high, uneconomical more.The especially waveform spring washer of major diameter, shape-setting clamp manufacturing expense higher.
Invention content：
Present invention solves the technical problem that being：Ultra-thin major diameter waveform spring gasket features heat-treatment distortion is effectively controlled
System makes its structure size and material hardness coincidence pattern requirement without being corrected processing after the thermally treated processing of part.
The present invention invention content be：A kind of heat treatment method of ultra-thin major diameter waveform spring gasket features is provided.Its
It is made of 2 parts：1) parts fixation fixture and clamping method；2) heat treating regime.
Technical solution：
Hanger of the manufacture for clamping gasket features first, the applicable washer of different size and specifications of hanger.Heat treatment
Implementation steps are specific as follows：
First step parts fixation
1. greasy dirt, the burr etc. on part are cleaned out；2. washer is taken advantage of a situation by its waveform stacks neat (stack height
No more than 10mm) → 3. neat washer circumferentially banding fixed will be stacked with thin wire；→ 4. 3. stacking neat and bind
Good washer keeps flat loading hanger → 4. will 3. stack washer that is neat and bind again with thin wire and hanger banding fixed.
Each hanger can be put by the part 3. stacked 15~20 layers (depending on heating furnace burner hearth dischargeable capacity sizes).
Second step heat treatment operation
Heat treatment process uses isothermal hardening.Required Equipment for Heating Processing has：1) medium temperature salt bath furnace, heating temperature is at 800 DEG C
~900 DEG C；2) low temperature liquid furnace, heating temperature is at 250 DEG C~400 DEG C；3) hot water storgae.
Operation：1. with the link hooked above clamping fixture, hanger naturally droops, and clamping fixture is put vertically
Enter and is heated in medium temperature salt bath furnace；→ 2. workpiece heat preservation terminate to be transferred in alkaline bath furnace rapidly and carry out isothermal hardening, isothermal holding time
20~30 minutes；→ 3. isothermal terminate to be transferred in hot water it is cooling；→ 4. clean and dry workpiece.
Third step dismounting part
By the residual salt on the clean part of Cleaning of Parts after heat treatment and carry out antirust treatment.
Technique effect
The heat treatment process that ultra-thin major diameter waveform spring washer is carried out using this method, the advantage is that：1. being heat-treated
The structure of frock clamp is simple, practical, is not limited by the size variation of gasket diameters size；2. washer heat treatment after be not required into
Row correction；3. work-handling is simply, conveniently.
It is verified through production, the heat treatment process of ultra-thin major diameter waveform spring washer is carried out using technical solution of the present invention,
It can guarantee the elastic property for reaching pattern requirement after washer heat treatment, and heat-treatment distortion controls in pattern claimed range, no
Correction after need to being heat-treated can guarantee washer appearance and size coincidence pattern requirement.It improves product qualification rate, reduce
Manufacturing cost.
Description of the drawings
Attached drawing 1：Ultra-thin major diameter waveform spring gasket construction schematic diagram
Fig. 2：Heat treatment hanger schematic diagram
Fig. 3:Method flow diagram
Fig. 4 is parts fixation schematic diagram
.Wherein 1. indicate is hanger (clamping device), 2. indicate is to take advantage of a situation to stack neat and banding fixed by waveform
Part to be heated, 3. indicate is tie wire.Clamping process：By part to be heated, 2. 1. horizontally mounted hanger, is used
Iron wire completes parts fixation 3. by part to be heated 2. with hanger 1. banding fixed.
Case study on implementation：
My company's figure number is the waveform spring washer of ××× 1450, material trademark 60Si2MnA, part material thickness δ=
0.4mm, washer outer diameter are Ф 125mm, internal diameter is Ф 103mm, it is desirable that it is 45HRC~51HRC to be heat-treated to hardness.
Being heat-treated specific implementation process is：
1, greasy dirt, the burr etc. on part are cleaned out；
2, washer being taken advantage of a situation by its waveform, it is neat to stack, and 20 folded for 1, and neat washer will be stacked circumferentially with thin wire
Banding fixed；
3, washer that is neat and bind will be stacked and keep flat loading hanger, each hanger has been put 4 and folded, with thin wire part
With hanger banding fixed；
4, heat treatment operation：Hanger (loading onto part) is put into medium temperature salt bath furnace vertically and is heated, heating temperature is 850 DEG C
± 10 DEG C, 6~8 minutes are kept the temperature at a temperature of this, heat preservation terminates to be transferred in alkaline bath liquid furnace in 370 DEG C of ± 10 DEG C of retention times rapidly
Isothermal hardening is carried out within 30 minutes, isothermal terminates to be transferred to cooling in 40 DEG C~70 DEG C of hot water；
5, part is dismantled after being heat-treated, and is cleaned up the residual salt on part and is carried out antirust treatment.
It examines：Hardness determination 482HV~512HV (is equivalent to Rockwell hardness 47HRC~50HRC), meets product requirement；Zero
Part is distortionless, deformation coincidence pattern tolerance.
Claims (1)
1. a kind of heat treatment method of ultra-thin major diameter waveform spring washer, it is characterised in that：Including following steps；
First step parts fixation；1. greasy dirt, the burr etc. on part are cleaned out；It is stacked 2. washer is taken advantage of a situation by its waveform
Neatly, stack height is no more than 10mm；3. neat washer circumferentially banding fixed will be stacked with thin wire；4. whole 3. stacking
Washer that is neat and having bound keeps flat loading hanger；4. will 3. stack washer that is neat and having bound to be tied up with thin wire and hanger again
It pricks and fixes；Each hanger can be put by 15~20 layers of the part 3. stacked, depending on heating furnace burner hearth dischargeable capacity size；
Second step heat treatment operation：Heat treatment process uses isothermal hardening, required Equipment for Heating Processing to have：1) medium temperature salt bath furnace adds
Hot temperature is at 800 DEG C~900 DEG C；2) low temperature liquid furnace, heating temperature is at 250 DEG C~400 DEG C；3) hot water storgae；Operation：1. with hook
The link above clamping fixture is hooked, hanger naturally droops, and clamping fixture is put into vertically in medium temperature salt bath furnace and is heated；②
Workpiece heat preservation, which terminates to be transferred in alkaline bath furnace rapidly, carries out isothermal hardening, isothermal holding time 20~30 minutes；3. isothermal terminates to turn
Enter cooling in hot water；4. cleaning and dry workpiece；
Third step dismounting part：By the residual salt on the clean part of Cleaning of Parts after heat treatment and carry out antirust treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611140848.XA CN108611482A (en) | 2016-12-12 | 2016-12-12 | A kind of heat treatment method of ultra-thin major diameter waveform spring washer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611140848.XA CN108611482A (en) | 2016-12-12 | 2016-12-12 | A kind of heat treatment method of ultra-thin major diameter waveform spring washer |
Publications (1)
| Publication Number | Publication Date |
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| CN108611482A true CN108611482A (en) | 2018-10-02 |
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| CN201611140848.XA Pending CN108611482A (en) | 2016-12-12 | 2016-12-12 | A kind of heat treatment method of ultra-thin major diameter waveform spring washer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111996359A (en) * | 2020-08-31 | 2020-11-27 | 安庆海威尔机械有限公司 | Method for preventing deformation of piston ring during quenching |
| CN112011682A (en) * | 2020-09-28 | 2020-12-01 | 安庆海威尔机械有限公司 | Auxiliary tool for reducing deformation rate of piston ring during quenching |
| CN112011681A (en) * | 2020-09-28 | 2020-12-01 | 安庆海威尔机械有限公司 | Method for reducing deformation rate of piston ring during quenching |
| CN115323148A (en) * | 2022-07-05 | 2022-11-11 | 中航贵州飞机有限责任公司 | Tempering clamp for heat treatment of large-size angle part and heat treatment method |
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| CN101134995A (en) * | 2007-10-16 | 2008-03-05 | 长安汽车（集团）有限责任公司 | Alloy spring steel ultra-fine martensite heat treatment quenching strengthening process |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101134995A (en) * | 2007-10-16 | 2008-03-05 | 长安汽车（集团）有限责任公司 | Alloy spring steel ultra-fine martensite heat treatment quenching strengthening process |
Non-Patent Citations (2)
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| 王立洪: "薄片弹簧的热处理", 《金属热处理》 * |
| 肖家幸: "薄片类工件淬火变形的控制", 《金属加工(热加工)》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111996359A (en) * | 2020-08-31 | 2020-11-27 | 安庆海威尔机械有限公司 | Method for preventing deformation of piston ring during quenching |
| CN112011682A (en) * | 2020-09-28 | 2020-12-01 | 安庆海威尔机械有限公司 | Auxiliary tool for reducing deformation rate of piston ring during quenching |
| CN112011681A (en) * | 2020-09-28 | 2020-12-01 | 安庆海威尔机械有限公司 | Method for reducing deformation rate of piston ring during quenching |
| CN115323148A (en) * | 2022-07-05 | 2022-11-11 | 中航贵州飞机有限责任公司 | Tempering clamp for heat treatment of large-size angle part and heat treatment method |
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Application publication date: 20181002 |