CN109722505A - Middle low carbon steel automobile clutch parts machining method and its equipment - Google Patents
Middle low carbon steel automobile clutch parts machining method and its equipment Download PDFInfo
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- CN109722505A CN109722505A CN201811610623.5A CN201811610623A CN109722505A CN 109722505 A CN109722505 A CN 109722505A CN 201811610623 A CN201811610623 A CN 201811610623A CN 109722505 A CN109722505 A CN 109722505A
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Abstract
The present invention devises middle low carbon steel automobile clutch parts machining method to solve modifier treatment for the problem of Cracking technical problem of product core structure state and product in quenching process, it at least includes the following steps, forging, blank is directly forged into the profile of components, section has at least one ladder and its wall thickness is 5 ~ 20mm；Heat treatment, by product placement on main furnace mesh belt, product enters main stove heating austenitizing, it selects 820-860 DEG C of austenitizing temperature to heat product, keeps the temperature about 40-90 minutes, then, product is by mesh belt transmission into saline slot, it is quenched, rinse bath is entered after the completion of quenching, product continuation enters tempering furnace with mesh belt transmission and is tempered；Product after heat treatment is carried out carrying out flaw detection by non-destructive detecting device, avoided the problem of product crack-sensitivity size section cracks, product comprehensive mechanical property is good, fully meets the requirement of use condition by non-destructive testing.
Description
Technical field
The present invention relates to the Design of Auto Parts technical field more particularly to middle low carbon steel automobile clutch parts machinings
Method and its equipment.
Background technique
The quenching-and-tempering process of automobile clutch components generallys use continuous type furnace heating product, and heating temperature is adopted
It with austenitizing temperature, is quenched frequently with water or oil, then carries out different temperatures item according to the technical requirements of product
The high tempering of part is handled.For using middle low carbon steel material processing product, wall thickness dimension section 6-12mm be crackle the most
Sensitive size section.Traditional modifier treatment for problem of Cracking in quenching process of product core structure state and product not
It is avoided that, always exists hidden danger, the service life and safety to product cause bad consequence.
Meanwhile middle low carbon steel material price is cheap, forging, mach processing performance are good, wide in industrial circle application
It is general, if solving the problems, such as harden ability difference and cracking, the Industry that can only use structural alloy steel at present will can be replaced,
Very big contribution is created in terms of reducing industrial production cost and the competitiveness that develops skill.
Summary of the invention
The present invention devises middle low carbon steel automobile clutch parts machining method to solve the above technical problem, at least
The following steps are included:
Blanking uses the bar of medium carbon steel production forging；
Blank is directly forged into the profile of components by forging, and section has at least one ladder and its wall thickness is 5 ~ 20mm；
Product size section (wall thickness) can accomplish full through hardening, no free ferrite, troostite, tempering between 5-20mm as a result,
Metallographic structure exists without free ferrite, does not crack, product comprehensive mechanical property is good, fully meets wanting for use condition
It asks；
Heat treatment, by product placement on main furnace mesh belt, product enters main stove heating austenitizing, selects austenitizing temperature
820-860 DEG C is heated product, keeps the temperature about 40-90 minutes, and then, product, into saline slot, is carried out by mesh belt transmission
Quenching treatment, enters rinse bath after the completion of quenching, product continuation enters tempering furnace with mesh belt transmission and is tempered；
Non-destructive testing, by the product after heat treatment by non-destructive detecting device carry out carrying out flaw detection, non-destructive detecting device be vortex,
Ultrasound, magnetic powder etc.；
Turning further finishes；
Assembly, is assembled into finished product.
As a preference of the present invention, tempering temperature selects suitable tempering temperature, temperature according to the final hardness requirement of product
Degree selects 520-590 DEG C.
Expect in saline slot under mesh belt transmission freedom as a preference of the present invention, product passes through, using free discharged way
It is quenched into saline slot, by mesh belt transmission by quenching tank, reaches rapid cooling, the effect of quenching, product surface decarburized layer control
System≤0.3mm.
As a preference of the present invention, the process equipment of the heat treatment step uses grill-hearth travelling oven electric heating and heating
It is handled in the process using gas shield, using nitrogen, methanol as basic atmosphere, propane carries out carbon as enriched gas for gas shield
Gesture control.
Product oxidation and decarbonization is prevented as a result, and high production efficiency, equipment operation is simple, and stable, every monitoring condition is complete
It is kind, by rationally controlling heating and quenching process, avoid the problem of product crack-sensitivity size section cracks.
As a preference of the present invention, the process equipment of product automatically controls, it is provided with curve and warning device and online
Record in real time.
The equipment that monitors and controls in grill-hearth travelling oven is Equipment for Heating Processing controller common on the market as a result,.
As a preference of the present invention, steel used in blank are middle low carbon steels or the middle low-carbon alloy steels such as No. 45 steel.
Structural alloy steel is replaced with No. 45 steel of carbon steel as a result, reduces production cost, solves a technology difficulty in industry
Topic, improves industrial competition, and material aspect can extend to the requirement such as 40Cr of analog material race, No. 35 steel etc..
As a preference of the present invention, being produced using a whole set of automated production equipment, wherein in order successively including forging
Manufacturing apparatus, grill-hearth travelling oven, non-destructive detecting device, turning equipment and assembly equipment.
As a preference of the present invention, middle low carbon steel automobile clutch parts machining equipment, the grill-hearth travelling oven is extremely
Few successively include heating furnace, quenching tank, cleaning machine, tempering furnace in order, and the heating furnace, quenching tank, cleaning machine, tempering furnace are logical
It crosses transporting reticulation belt and realizes connection.
As a preference of the present invention, the quenching tank is located at the lower section of the heating furnace.
As a preference of the present invention, the transporting reticulation belt is automatically controlled by motor.
The invention has the following advantages:
1, equipment aspect: using grill-hearth travelling oven, using electric heating, band protective atmosphere heat treatment.By rationally controlling heating
And quenching process, it avoids the problem of product crack-sensitivity size section cracks；
2, in terms of product requirement: product size section (wall thickness) can accomplish full through hardening between 5-20mm, no free ferrite,
Troostite, tempering metallographic structure exist without free ferrite, do not crack.Product comprehensive mechanical property is good, and fully meeting makes
With the requirement of condition.
3, in terms of material: replacing structural alloy steel with No. 45 steel of carbon steel, reduce production cost, solve one in industry
Technical problem improves industrial competition.It can extend to the requirement of analog material race in terms of material.
4, in terms of process control: entering saline slot quenching using free discharged way and reached by mesh belt transmission by quenching tank
To rapid cooling, the effect of quenching.Product surface decarburized layer control≤0.3mm.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is process flow chart of the invention；
Fig. 2 is heat treatment cycle curve of the invention；
Fig. 3 is structure schematic diagram of the invention；
Fig. 4 is Equipment for Heating Processing structural schematic diagram of the invention；
Fig. 5 is the cross section structure schematic diagram of product of the present invention；
Fig. 6 is present invention heat treatment metallographic contrast schematic diagram.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
As shown in Figure 1, middle low carbon steel automobile clutch parts machining method, which is characterized in that include at least following step
It is rapid:
Blanking uses the bar of medium carbon steel production forging；
Blank is directly forged into the profile of components by forging, and section has at least one ladder and its wall thickness is 5 ~ 20mm,
Product size section (wall thickness) can accomplish full through hardening, no free ferrite between 5-20mm, and troostite is tempered metallographic structure
No free ferrite exists, and does not crack, product comprehensive mechanical property is good, fully meets the requirement of use condition；
Heat treatment, by product placement on main furnace mesh belt, product enters main stove heating austenitizing, selects austenitizing temperature
820-860 DEG C is heated product, keeps the temperature about 40-90 minutes, and then, product, into saline slot, is carried out by mesh belt transmission
Quenching treatment, enters rinse bath after the completion of quenching, product continuation enters tempering furnace with mesh belt transmission and is tempered；
Non-destructive testing, by the product after heat treatment by non-destructive detecting device carry out carrying out flaw detection, non-destructive detecting device be vortex,
Ultrasound, magnetic powder etc.；
Turning further finishes；
Assembly, is assembled into finished product.
In the present embodiment, tempering temperature selects suitable tempering temperature according to the final hardness requirement of product, and temperature is selected
520-590 DEG C, product passes through to be expected in saline slot under mesh belt transmission freedom, enters saline slot quenching using free discharged way,
By mesh belt transmission by quenching tank, reach rapid cooling, the effect of quenching, product surface decarburized layer control≤0.3mm, the heat
The process equipment of processing step is handled using in grill-hearth travelling oven electric heating and heating process using gas shield, gas shield
Using nitrogen, methanol as basic atmosphere, propane carries out carbon-potential control, prevents product oxidation and decarbonization, production efficiency as enriched gas
Height, equipment operation is simple, stable, and every monitoring condition is perfect, by rationally controlling heating and quenching process, avoids
The process equipment of the problem of product crack-sensitivity size section cracks, product automatically controls, and is provided with curve and warning device
And record in real time online, the equipment that monitors and controls in grill-hearth travelling oven is Equipment for Heating Processing control common on the market
Device, steel used in blank are middle low carbon steels or the middle low-carbon alloy steels such as No. 45 steel, replace alloy structure with No. 45 steel of carbon steel
Steel reduces production cost, solves a technical problem in industry, improves industrial competition, can extend to phase in terms of material
Like the requirement such as 40Cr of material race, No. 35 steel etc..
In the present embodiment, middle low carbon steel automobile clutch parts machining equipment, using a whole set of automated production equipment into
Row production, wherein in order successively including forging equipment, grill-hearth travelling oven, non-destructive detecting device, turning equipment, it is described continuous
Type net belt furnace at least successively includes heating furnace, quenching tank, cleaning machine, tempering furnace, the heating furnace, quenching tank, cleaning in order
Machine, tempering furnace realize by transporting reticulation belt and are connected to that the quenching tank is located at the lower section of the heating furnace, and the transporting reticulation belt passes through
Motor automatically controls, wherein various equipment are the prior art on the market.
Embodiment described above is only that preferred embodiments of the present invention will be described, not to design of the invention
It is defined with range.Without departing from the design concept of the invention, ordinary people in the field is to technical side of the invention
The all variations and modifications that case is made, should all drop into protection scope of the present invention, the claimed technology contents of the present invention,
Through being all described in the claims.
Claims (10)
1. middle low carbon steel automobile clutch parts machining method, which is characterized in that at least include the following steps:
Blank is directly forged into the profile of components by forging, and section has at least one ladder and its wall thickness is 5 ~ 20mm；
Heat treatment, by product placement on main furnace mesh belt, product enters main stove heating austenitizing, selects austenitizing temperature
820-860 DEG C is heated product, keeps the temperature about 40-90 minutes, and then, product, into saline slot, is carried out by mesh belt transmission
Quenching treatment, enters rinse bath after the completion of quenching, product continuation enters tempering furnace with mesh belt transmission and is tempered；
Product after heat treatment is carried out carrying out flaw detection by non-destructive detecting device by non-destructive testing.
2. middle low carbon steel automobile clutch parts machining method according to claim 1, it is characterised in that: tempering temperature
Suitable tempering temperature is selected according to the final hardness requirement of product, temperature selects 520-590 DEG C.
3. middle low carbon steel automobile clutch parts machining method according to claim 1, it is characterised in that: product passes through
Expect in saline slot under mesh belt transmission freedom, saline slot quenching is entered using free discharged way, quenching is passed through by mesh belt transmission
Slot reaches rapid cooling, the effect of quenching, product surface decarburized layer control≤0.3mm.
4. middle low carbon steel automobile clutch parts machining method according to claim 1, it is characterised in that: at the heat
The process equipment of step is managed using grill-hearth travelling oven electric heating and is handled using gas shield in heating process, gas shield with
As basic atmosphere, propane carries out carbon-potential control as enriched gas for nitrogen, methanol.
5. middle low carbon steel automobile clutch parts machining method according to claim 1, it is characterised in that: product adds
Construction equipment automatically controls, and is provided with curve and warning device and online record in real time.
6. middle low carbon steel automobile clutch parts machining method according to claim 1, it is characterised in that: used in blank
Steel are middle low carbon steels or the middle low-carbon alloy steels such as No. 45 steel.
7. middle low carbon steel automobile clutch parts machining equipment, it is characterised in that: carried out using a whole set of automated production equipment
Production, wherein in order successively including forging equipment, grill-hearth travelling oven, non-destructive detecting device, turning equipment.
8. middle low carbon steel automobile clutch parts machining equipment according to claim 7, it is characterised in that: described continuous
Type net belt furnace at least successively includes heating furnace, quenching tank, cleaning machine, tempering furnace, the heating furnace, quenching tank, cleaning in order
Machine, tempering furnace are realized by transporting reticulation belt and are connected to.
9. middle low carbon steel automobile clutch parts machining equipment according to claim 8, it is characterised in that: the quenching
Slot position is in the lower section of the heating furnace.
10. middle low carbon steel automobile clutch parts machining equipment according to claim 8 or claim 9, it is characterised in that: described
Transporting reticulation belt is automatically controlled by motor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811610623.5A CN109722505A (en) | 2018-12-27 | 2018-12-27 | Middle low carbon steel automobile clutch parts machining method and its equipment |
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| CN201811610623.5A CN109722505A (en) | 2018-12-27 | 2018-12-27 | Middle low carbon steel automobile clutch parts machining method and its equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110453050A (en) * | 2019-08-29 | 2019-11-15 | 洛阳市洛凌轴承科技股份有限公司 | There is the experimental method of free ferrite reason in a kind of determining salt furnace treatment reason |
| CN110564924A (en) * | 2019-10-30 | 2019-12-13 | 江苏聚源电气有限公司 | Quenching and tempering and integral quenching process method for 40CrMnMo steel |
| CN115232927A (en) * | 2022-06-22 | 2022-10-25 | 重庆众诚精密模锻有限公司 | High-temperature deformation waste heat treatment method for automobile flange forging |
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| CN110564924A (en) * | 2019-10-30 | 2019-12-13 | 江苏聚源电气有限公司 | Quenching and tempering and integral quenching process method for 40CrMnMo steel |
| CN115232927A (en) * | 2022-06-22 | 2022-10-25 | 重庆众诚精密模锻有限公司 | High-temperature deformation waste heat treatment method for automobile flange forging |
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Application publication date: 20190507 |