CN107012311A - It is the process for quenching that 4.5~5.5mm external diameters are the steel plate washers of 28~Φ of Φ 65 for thickness - Google Patents
It is the process for quenching that 4.5~5.5mm external diameters are the steel plate washers of 28~Φ of Φ 65 for thickness Download PDFInfo
- Publication number
- CN107012311A CN107012311A CN201710148312.0A CN201710148312A CN107012311A CN 107012311 A CN107012311 A CN 107012311A CN 201710148312 A CN201710148312 A CN 201710148312A CN 107012311 A CN107012311 A CN 107012311A
- Authority
- CN
- China
- Prior art keywords
- quenching
- meshbeltfurnace
- temperature
- pad
- steel plate
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- 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
-
- 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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/76—Adjusting the composition of the atmosphere
-
- 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
- C21D11/00—Process control or regulation for heat treatments
Landscapes
- 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
A kind of thickness that is used for is the process for quenching that 4.5~5.5mm external diameters are the steel plate washers of 28~Φ of Φ 65, comprise the following steps, adjust meshbeltfurnace in-furnace temperature, it is 910~950 DEG C to make the firstth area of meshbeltfurnace temperature, the secondth area of meshbeltfurnace temperature is 910~950 DEG C, and the area's temperature of meshbeltfurnace the 3rd is 870~910 DEG C；Cooling bay temperature is adjusted, by cooling oil Oil-temperature control at 60~70 DEG C；Carbon potential in meshbeltfurnace stove is adjusted, carbon potential in stove is maintained at 0.40~0.45%；The transporting velocity of meshbeltfurnace is adjusted, it is 70~100 minutes from meshbeltfurnace import to the time of guipure outlet of still to make conveyer belt；Pad to be quenched is placed on into conveyer belt feeding meshbeltfurnace to be heated；Pad after heating is inserted in cooling bay and cooled down, quenching processing is completed；The pad of quenching is detected, qualified products are chosen.It the advantage is that：This technique is avoided that the generation of hardness non-uniform phenomenon after pad quenching, the pad integral hardness after quenching is reached more than 50HRC, and the neither poor carbon of pad after quenching, also not carburetting, and metallographic structure martensite is up to more than 95%.
Description
Technical field
Manufacture field is quenched the present invention relates to a kind of pad, especially one kind is that 4.5~5.5mm external diameters are Φ for thickness
The process for quenching of the steel plate washers of 28~Φ 65.
Background technology
A kind of existing Patent No. CN201410370971.5 is entitled《Guipure furnace roller is heat-treated zero Decarburization Control side
Method》Chinese invention patent disclose a kind of guipure furnace roller and be heat-treated zero Decarburization Control method, including quenching, tempering and detect
Three steps, its innovative point is：Described quenching Step carries out Quenching Treatment in meshbeltfurnace quenching area, using methanol, nitrogen
With three kinds of control climate carbon potentials of propane, during Quench heating, point 3rd area control atmosphere flow, first, secondth area is passed through nitrogen
And propane, propane is controlled using two parts, a part of to use constant 0.5~1L/min of low discharge, and another part utilizes oxygen to visit
Head automatic compensation type control, is passed through 2~3L/min when carbon potential is not enough, the 3rd area leads to nitrogen and methanol, and flow is respectively 6~
6.4m3/ h and 4~4.5m3/h.The time of roller heating is 52~60 minutes, and hardening heat is 850 ± 5 DEG C, carbon potential stability contorting
0.7~0.8%；The tempering stage, temperature is 160~165 DEG C, and soaking time is 180~210 minutes.The invention
Method efficiently solve conventional control during, the easy realistic problem of poor carbon under easy carburetting and low-carbon gesture under high carbon potential.
However, when this method is applied on the larger pad of thickness, pad core quenches impermeable, and gasket surface is likely to occur male and female face, and
Core hardness and case hardness are inconsistent, and quenching effect is undesirable, therefore this method also needs further improvement.
The content of the invention
The technical problems to be solved by the invention be for above-mentioned state of the art and one kind is provided can be complete by pad
Through hardening, core hardness and the completely the same uniform thickness that is used for of case hardness are the steel that 4.5~5.5mm external diameters are 28~Φ of Φ 65
The process for quenching of pad.
The present invention solve the technical scheme that is used of above-mentioned technical problem for：This is that 4.5~5.5mm external diameters are for thickness
The process for quenching of the steel plate washers of 28~Φ of Φ 65, it is characterised in that：By steel plate washer on meshbeltfurnace continuous quenching；Concretely comprise the following steps：
One, meshbeltfurnace in-furnace temperature is adjusted, it is 910~950 DEG C to make the first quenching area of meshbeltfurnace temperature control, meshbeltfurnace the
Two quenching area temperature controls are 910~950 DEG C, and the quenching area temperature control of meshbeltfurnace the 3rd is 870~910 DEG C；
Two, quenching bath temperature is adjusted, the Quenching Oil Temperature of quenching is controlled at 60~70 DEG C；
Three, carbon potential in regulation meshbeltfurnace stove, make carbon molecules content in stove be maintained at furnace gas gross mass 0.40~
0.45%；
Four, the transporting velocity of meshbeltfurnace is adjusted, conveyer belt is moved to the time control of guipure outlet of still from meshbeltfurnace import
It is made as 70~90 minutes；
Five, steel plate washer to be quenched is placed on conveyer belt feeding meshbeltfurnace and heated；
Six, the quenching oil quenching that the steel plate washer after heating is inserted in quenching bath, steel plate washer takes out from quenching bath is
Complete quenching processing；
Seven, the steel plate washer of quenching is detected, qualified products are chosen.
As an improvement, firstth area of meshbeltfurnace temperature is preferably 930 DEG C, the secondth area of meshbeltfurnace temperature is preferably
930 DEG C, the area's temperature of meshbeltfurnace the 3rd is 890 DEG C.
As an improvement, carbon molecules content is maintained at the 0.42% of furnace gas gross mass in the stove.
As an improvement, the method for the control carbon molecules content is preferably：Methanol and toluene are added in stove, makes methanol
Carbon molecules is obtained with toluene gasification decomposition.
As an improvement, the conveyer belt is preferably 80 minutes from meshbeltfurnace import to the time of guipure outlet of still.
As an improvement, the conveyer belt is preferably 25 minutes in meshbeltfurnace the firstth area time, conveyer belt is in meshbeltfurnace the
Two area's times were preferably 25 minutes, and conveyer belt is preferably 30 minutes in the area's time of meshbeltfurnace the 3rd.
As an improvement, the quenching oil is preferably fast quenching oil.Fast quenching oil is known technology.
As an improvement, the detection includes detecting the hardness of pad and the phosphorus content of pad, qualified hardness is to be more than or wait
In 50HRC, qualified phosphorus content is equal to the phosphorus content of processing front pad.
As an improvement, by underproof steel plate washer is recycled after testing in step 7.
Compared with prior art, the advantage of the invention is that：This technique can process large-scale pad and more than thickness 5mm pad
Piece, has a wide range of application；This technique is avoided that the generation of hardness non-uniform phenomenon after pad quenching, makes the pad after quenching integrally hard
Degree reaches more than 50HRC, and the neither poor carbon of pad after quenching, also not carburetting, and metallographic structure martensite is up to more than 95%；
The explanation of meshbeltfurnace subregion and heat time are to be added；The pad of this technique productions, stay in grade, quenching effect is good, is worth pushing away
Extensively.
Brief description of the drawings
Fig. 1 is the process schematic representation of the embodiment of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
As shown in figure 1, it is the process for quenching that 4.5~5.5mm external diameters are the steel plate washers of 28~Φ of Φ 65 that this, which is used for thickness, it is special
Levy and be：By steel plate washer on meshbeltfurnace continuous quenching；Concretely comprise the following steps：
One, meshbeltfurnace in-furnace temperature is adjusted, it is 910~950 DEG C to make the first quenching area of meshbeltfurnace temperature control, meshbeltfurnace the
Two quenching area temperature controls are 910~950 DEG C, and the quenching area temperature control of meshbeltfurnace the 3rd is 870~910 DEG C；
Two, quenching bath temperature is adjusted, the Quenching Oil Temperature of quenching is controlled at 60~70 DEG C；
Three, carbon potential in regulation meshbeltfurnace stove, make carbon molecules content in stove be maintained at furnace gas gross mass 0.40~
0.45%；
Four, the transporting velocity of meshbeltfurnace is adjusted, conveyer belt is moved to the time control of guipure outlet of still from meshbeltfurnace import
It is made as 70~90 minutes；
Five, steel plate washer to be quenched is placed on conveyer belt feeding meshbeltfurnace and heated；
Six, the quenching oil quenching that the steel plate washer after heating is inserted in quenching bath, steel plate washer takes out from quenching bath is
Complete quenching processing；
Seven, the steel plate washer of quenching is detected, qualified products are chosen.
Above-mentioned the firstth area of meshbeltfurnace temperature is 930 DEG C, and the secondth area of meshbeltfurnace temperature is 930 DEG C, the area's temperature of meshbeltfurnace the 3rd
For 890 DEG C.Carbon molecules content is maintained at the 0.42% of furnace gas gross mass, the side of the control carbon molecules content in the stove
Method is：Methanol and toluene are added in stove, methanol is obtained carbon molecules with toluene gasification decomposition.The conveyer belt enters from meshbeltfurnace
The time of mouth to guipure outlet of still is 80 minutes.The conveyer belt is 25 minutes in meshbeltfurnace the firstth area time, and conveyer belt is in net
Band stove the secondth area time is 25 minutes, and conveyer belt is 30 minutes in the area's time of meshbeltfurnace the 3rd.The quenching oil is rapid quenching
Oil.The detection includes detecting the hardness of pad and the phosphorus content of pad, and qualified hardness is qualified to contain for more than or equal to 50HRC
Carbon amounts is equal to the phosphorus content of processing front pad.By underproof steel plate washer is recycled after testing in step 7.This quenching
Method is particularly suitable for use in 45# steel plate washers.
Operation principle：The transporting velocity of meshbeltfurnace in-furnace temperature and carbon potential, cooling bay temperature and conveyer belt is adjusted, then
Pad to be processed is inserted in meshbeltfurnace and heated, then inserts cooling in cooling bay, hardening step is completed, the carbon potential can
Directly controlled by carbon-potential control device, guipure furnace temperature and cooling bay temperature can be using temperature controller controls, conveyer belt conveying
Speed can be by motor and counting chip co- controlling, and specific method is known technology, therefore is repeated no more.
Claims (10)
1. a kind of thickness that is used for is the process for quenching that 4.5~5.5mm external diameters are the steel plate washers of 28~Φ of Φ 65, it is characterised in that：Will
Steel plate washer continuous quenching on meshbeltfurnace；Concretely comprise the following steps：
One, meshbeltfurnace in-furnace temperature is adjusted, it is 910~950 DEG C to make the first quenching area of meshbeltfurnace temperature control, and meshbeltfurnace second is quenched
Flame range temperature control is 910~950 DEG C, and the quenching area temperature control of meshbeltfurnace the 3rd is 870~910 DEG C；
Two, quenching bath temperature is adjusted, the Quenching Oil Temperature of quenching is controlled at 60~70 DEG C；
Three, carbon potential in meshbeltfurnace stove is adjusted, carbon molecules content in stove is maintained at the 0.40~0.45% of furnace gas gross mass；
Four, the transporting velocity of meshbeltfurnace is adjusted, makes the time control that conveyer belt is moved to guipure outlet of still from meshbeltfurnace import be
70~90 minutes；
Five, steel plate washer to be quenched is placed on conveyer belt feeding meshbeltfurnace and heated；
Six, the quenching oil quenching that the steel plate washer after heating is inserted in quenching bath, steel plate washer takes out from quenching bath to be completed
Quenching processing；
Seven, the steel plate washer of quenching is detected, qualified products are chosen.
2. process for quenching according to claim 1, it is characterised in that：Firstth area of meshbeltfurnace temperature is 930 DEG C, guipure
The secondth area of stove temperature is 930 DEG C, and the area's temperature of meshbeltfurnace the 3rd is 890 DEG C.
3. process for quenching according to claim 1, it is characterised in that：Carbon molecules content is maintained at furnace gas in the stove
The 0.42% of gross mass.
4. process for quenching according to claim 1, it is characterised in that：It is described control carbon molecules content method be：In stove
Interior addition methanol and toluene, make methanol obtain carbon molecules with toluene gasification decomposition.
5. process for quenching according to claim 1, it is characterised in that：The conveyer belt goes out from meshbeltfurnace import to meshbeltfurnace
The time of mouth is 80 minutes.
6. process for quenching according to claim 5, it is characterised in that：The conveyer belt is 25 in meshbeltfurnace the firstth area time
Minute, conveyer belt is 25 minutes in meshbeltfurnace the secondth area time, and conveyer belt is 30 minutes in the area's time of meshbeltfurnace the 3rd.
7. according to any described process for quenching in claim 1 to 6, it is characterised in that：The quenching oil is fast quenching oil.
8. process for quenching according to claim 1, it is characterised in that：The detection includes detecting the hardness and pad of pad
Phosphorus content, qualified hardness is that more than or equal to 50HRC, qualified phosphorus content is equal to the phosphorus content of processing front pad.
9. process for quenching according to claim 1, it is characterised in that：The steel pad is 45# steel plate washers.
10. process for quenching according to claim 6, it is characterised in that：By underproof steel plate washer after testing in step 7
Recycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710148312.0A CN107012311B (en) | 2017-03-11 | 2017-03-11 | For being the process for quenching of 28~Φ of Φ, 65 steel plate washer with a thickness of 4.5~5.5mm outer diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710148312.0A CN107012311B (en) | 2017-03-11 | 2017-03-11 | For being the process for quenching of 28~Φ of Φ, 65 steel plate washer with a thickness of 4.5~5.5mm outer diameter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107012311A true CN107012311A (en) | 2017-08-04 |
| CN107012311B CN107012311B (en) | 2019-06-07 |
Family
ID=59440256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710148312.0A Active CN107012311B (en) | 2017-03-11 | 2017-03-11 | For being the process for quenching of 28~Φ of Φ, 65 steel plate washer with a thickness of 4.5~5.5mm outer diameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107012311B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111197118A (en) * | 2020-02-20 | 2020-05-26 | 舟山市7412工厂 | Heat treatment method of self-tapping screw |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1258069B (en) * | 1963-05-27 | 1968-01-04 | Avisun Corp | Method and device for the production of film webs of uniform thickness from film-forming plastics |
| CN104099448A (en) * | 2014-07-31 | 2014-10-15 | 江苏力星通用钢球股份有限公司 | Roller heat treatment zero decarbonization control method for mesh belt furnace |
-
2017
- 2017-03-11 CN CN201710148312.0A patent/CN107012311B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1258069B (en) * | 1963-05-27 | 1968-01-04 | Avisun Corp | Method and device for the production of film webs of uniform thickness from film-forming plastics |
| CN104099448A (en) * | 2014-07-31 | 2014-10-15 | 江苏力星通用钢球股份有限公司 | Roller heat treatment zero decarbonization control method for mesh belt furnace |
Non-Patent Citations (1)
| Title |
|---|
| 齐齐哈尔第一机床厂等编著: "《典型机械零件热处理》", 30 November 2005 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111197118A (en) * | 2020-02-20 | 2020-05-26 | 舟山市7412工厂 | Heat treatment method of self-tapping screw |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107012311B (en) | 2019-06-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104294031B (en) | A kind of high-temperature bearing steel ring high pressure gas quenching technique | |
| KR100363813B1 (en) | Gas carburization method and its apparatus | |
| CN100582253C (en) | Cast iron series mould material thermal treatment method capable of acquiring controllable and uniform rigidity | |
| CN106756753A (en) | The carburization quenching method of low-speed heavy-loaded gear | |
| CN102808188A (en) | Gas carburizing and quenching technology for annular gears of transmissions | |
| CN104099448B (en) | Meshbeltfurnace roller thermal treatment zero Decarburization Control method | |
| CN103352108A (en) | H13 molten steel cold and hot treatment process | |
| CN105369015A (en) | 42 CrMo shaft part quenching and heat-treatment technology | |
| US7029625B2 (en) | Continuous vacuum carburizing furnace | |
| CN107955877A (en) | The control method of ultra low oxygen content in roller hearth heat-treated furnace | |
| CN101818239B (en) | Railway wheel heat treatment heating furnace and heat treatment process thereof | |
| CN104831293B (en) | Screw carburizing quenching process | |
| CN113174470B (en) | F45MnVS steel continuous normalizing heat treatment method | |
| CN107012311A (en) | It is the process for quenching that 4.5~5.5mm external diameters are the steel plate washers of 28~Φ of Φ 65 for thickness | |
| CN105349737A (en) | Double-frequency triple-effect induction quenching process for cold roll | |
| CN101818236A (en) | Method for manufacturing high carbon steel wheel | |
| CN106755805A (en) | A kind of heat treatment after forging technique of low-alloy carburizing steel | |
| CN105239034A (en) | Impregnation and repair heat treatment method for carburized gear | |
| CN111676441A (en) | Heat treatment method and tool for motorcycle edge surface bolt | |
| US20080087358A1 (en) | Induction Heat Treatment Apparatus, Induction Heat Treatment Method, And Worked Product Produced By Method Thereof | |
| JP6237459B2 (en) | Heat treatment method for steel pipe and method for producing steel pipe for bearing using the same | |
| CN106854691A (en) | Steel part Technology for Heating Processing, steel part forging method and annealing device using the Technology for Heating Processing | |
| US9365919B2 (en) | Method for reduction of time in a gas carburizing process and cooling apparatus utilizing a high speed quenching oil flow rate | |
| EP1808499A1 (en) | High-frequency heat treatment apparatus, high-frequency heat treatment process, and high-frequency heat treated article | |
| CN106399651B (en) | A kind of thin-walled major diameter mould overall vacuum quenching technical |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |