CN102758072B - Heat treatment process of flow passage component - Google Patents
Heat treatment process of flow passage component Download PDFInfo
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- CN102758072B CN102758072B CN201210247766.0A CN201210247766A CN102758072B CN 102758072 B CN102758072 B CN 102758072B CN 201210247766 A CN201210247766 A CN 201210247766A CN 102758072 B CN102758072 B CN 102758072B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000010791 quenching Methods 0.000 claims abstract description 11
- 230000000171 quenching effect Effects 0.000 claims abstract description 11
- 238000000137 annealing Methods 0.000 claims abstract description 7
- 238000009413 insulation Methods 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 12
- 238000005496 tempering Methods 0.000 claims description 10
- 238000007669 thermal treatment Methods 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052758 niobium Inorganic materials 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 4
- 230000003245 working effect Effects 0.000 description 3
- 239000003082 abrasive agent Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
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Abstract
The invention discloses a heat treatment process of a flow passage component. The process comprises the following steps of: carrying out quenching and annealing processes in a trolley type resistance furnace and carrying out softening annealing, wherein the flow passage component is formed from the following components in percentage by weight: 2.9-3.3% of C, 24-28% of Cr, less than or equal to 1.0% of Si, less than or equal to 2.0% of Mn, less than or equal to 1.0% of Ni, less than or equal to 1.0% of Mo, less than or equal to 1.0% of Cu, less than or equal to 0.1% of P, less than or equal to 0.1% of S, less than or equal to 0.2% of Nb, less than or equal to 0.5% of V and the balance of Fe. The heat treatment process of the flow passage component, disclosed by the invention, is reasonable in design, can be used for extremely improving the performance of the flow passage component, and prolongs the service life of the flow passage component under the condition that a large quantity of hard grains exist in a medium.
Description
technical field:
The present invention relates to the pump flow passage components, relate in particular to a kind of thermal treatment process of flow passage components.
background technology:
At present, in slag stock pump industry, it is Cr15Mo3 and Cr26 series that flow passage components are used maximum high-abrasive materials, and the Cr26 series material is developed for the production cost that reduces Cr15Mo3.The Cr26 material can be tackled the not strong working condition of most of corrosion, but, for severe especially operating mode, especially in medium, contains the operating mode of a large amount of high hardness particles, and the life-span of Cr26 material is lower by 50% ~ 70% than nominal situation, can not meet design requirement.
The moiety of how flow passage components being carried out is selected proportioning and rational thermal treatment process, make it to reach the operating mode severe especially, especially contain the operating mode of a large amount of high hardness particles in medium, extend work-ing life, is current research staff's problem demanding prompt solution.
summary of the invention:
The thermal treatment process of a kind of flow passage components of purpose of the present invention, reasonable in design, can greatly improve the performance of flow passage components, extend flow passage components and contain the work-ing life under the operating mode of a large amount of high hardness particles in medium.
The technical scheme of invention is as follows:
The thermal treatment process of flow passage components, is characterized in that, comprises the following steps:
(1), quenching technology: flow passage components are in dropping into bench vehicle type electrical resistance furnace lower than 100 ℃, be heated to 600 ~ 700 ℃ and be incubated 1 ~ 2h with the heating rate lower than 50 ℃/h, then be heated to 1000 ~ 1060 ℃ and be incubated 3 ~ 4h in the heating rate with lower than 110 ℃/h, finally flow passage components taken out to the bench vehicle type electrical resistance furnace air blast cooling to room temperature;
(2), tempering process: the flow passage components in room temperature after quenching are put into bench vehicle type electrical resistance furnace again, and be heated to 375 ~ 400 ℃ with the heating rate lower than 100 ℃/h, be incubated 5.5 ~ 6.5h in 375 ~ 400 ℃ of environment, after insulation, flow passage components taken out to bench vehicle type electrical resistance furnace and carry out natural air cooling.
(3), softening annealing: by the flow passage components after tempering in lower than 100 ℃, putting into bench vehicle type electrical resistance furnace, more than preheating insulation 2h, heating rate with 55 ~ 65 ℃/h is heated to 550 ~ 650 ℃ of insulation 0.5 ~ 1.5h, heating rate with 100 ~ 120 ℃/h is heated to 930 ~ 970 ℃ of insulation 2 ~ 4h again, cools to the furnace below 350 ℃ and comes out of the stove air cooling to room temperature.
The thermal treatment process of described flow passage components, it is characterized in that: described flow passage components are comprised of the mass percentage content component, and C2.9 ~ 3.3%, Cr24 ~ 28%, Si≤1.0%, Mn≤2.0%, Ni≤1.0%, Mo≤1.0%, Cu≤1.0%, P≤0.1%, S≤0.1%, Nb≤0.2%, V≤0.5% surplus are Fe.
The advantage of invention is:
The present invention is reasonable in design, can greatly improve the performance of flow passage components, extends flow passage components and contain the work-ing life under the operating mode of a large amount of high hardness particles in medium.
the accompanying drawing explanation:
Fig. 1 is quenching and tempering artwork of the present invention.
The artwork that Fig. 2 is softening annealing of the present invention.
embodiment:
The thermal treatment process of flow passage components, is characterized in that, comprises the following steps:
(1), quenching technology: flow passage components are in dropping into bench vehicle type electrical resistance furnace lower than 100 ℃, be heated to 600 ~ 700 ℃ and be incubated 1 ~ 2h with the heating rate lower than 50 ℃/h, then be heated to 1000 ~ 1060 ℃ and be incubated 3 ~ 4h in the heating rate with lower than 110 ℃/h, finally flow passage components taken out to the bench vehicle type electrical resistance furnace air blast cooling to room temperature;
(2), tempering process: the flow passage components in room temperature after quenching are put into bench vehicle type electrical resistance furnace again, and be heated to 375 ~ 400 ℃ with the heating rate lower than 100 ℃/h, be incubated 5.5 ~ 6.5h in 375 ~ 400 ℃ of environment, after insulation, flow passage components taken out to bench vehicle type electrical resistance furnace and carry out natural air cooling.
(3), softening annealing: by the flow passage components after tempering in lower than 100 ℃, putting into bench vehicle type electrical resistance furnace, more than preheating insulation 2h, heating rate with 55 ~ 65 ℃/h is heated to 550 ~ 650 ℃ of insulation 0.5 ~ 1.5h, heating rate with 100 ~ 120 ℃/h is heated to 930 ~ 970 ℃ of insulation 2 ~ 4h again, cools to the furnace below 350 ℃ and comes out of the stove air cooling to room temperature.
Flow passage components are comprised of the mass percentage content component, and C2.9 ~ 3.3%, Cr24 ~ 28%, Si≤1.0%, Mn≤2.0%, Ni≤1.0%, Mo≤1.0%, Cu≤1.0%, P≤0.1%, S≤0.1%, Nb≤0.2%, V≤0.5% surplus are Fe.
Embodiment 1:
Referring to Fig. 1, Fig. 2
(1), quenching technology: flow passage components are in dropping into bench vehicle type electrical resistance furnace lower than 100 ℃, be heated to 650 ℃ and be incubated 1 ~ 2h with the heating rate lower than 50 ℃/h, then be heated to 1040 ℃ and be incubated 3 ~ 4h in the heating rate with lower than 110 ℃/h, finally flow passage components taken out to the bench vehicle type electrical resistance furnace air blast cooling to room temperature;
(2), tempering process: the flow passage components in room temperature after quenching are put into bench vehicle type electrical resistance furnace again, and be heated to 380 ℃ with the heating rate lower than 100 ℃/h, be incubated 6h in 3800 ℃ of environment, after insulation, flow passage components taken out to bench vehicle type electrical resistance furnace and carry out natural air cooling.
(3), softening annealing: by the flow passage components after tempering in lower than 100 ℃, putting into bench vehicle type electrical resistance furnace, more than preheating insulation 2h, heating rate with 50 ℃/h is heated to 600 ℃ of insulation 1h, heating rate with 100 ℃/h is heated to 930 ~ 970 ℃ of insulation 2 ~ 4h again, cools to the furnace below 350 ℃ and comes out of the stove air cooling to room temperature.
Flow passage components are comprised of the mass percentage content component, and C3.1%, Cr26%, Si0.8%, Mn1.5%, Ni0.8%, Mo0.8%, Cu0.8%, P0.05%, S0.05%, Nb0.15%, V0.3%, surplus are Fe.
The present invention is according to the heat treatment regime of Cr26 material, draw thermal treatment process by the quadrature ratio method, with over-all properties optimums such as the hardness that guarantees material, impelling strength, in test, quadrature has contrasted the quenching and preserving heat temperature of 1020 ℃, 1050 ℃, 1080 ℃, has contrasted 250 ℃ and 6 kinds of thermal treatment process of 400 ℃ of tempering holding temperature works.
Concrete experimental result is as follows:
| Hardness HRC | 1020℃ | 1050℃ | 1080℃ |
| 250℃ | 56~58 | 58~62 | 59~62 |
| 400℃ | 55~57 | 59~62 | 59~62 |
| Impelling strength J/cm 2 | 1020℃ | 1050℃ | 1080℃ |
| 250℃ | 8 | 8 | 5 |
| 400℃ | 8 | 7 | 3 |
From experimental result, can find out: 1050 ℃ and 1080 ℃ of hardness of being quenched comparatively superior, but can find by the contrast of impelling strength, 1080 ℃ are quenched, the impelling strength of material sharply reduces.
Claims (1)
1. the thermal treatment process of flow passage components, is characterized in that, comprises the following steps:
(1), quenching technology: flow passage components are in dropping into bench vehicle type electrical resistance furnace lower than 100 ℃, be heated to 600～700 ℃ and be incubated 1～2h with the heating rate lower than 50 ℃/h, and then be heated to 1000～1060 ℃ and be incubated 3～4h with the heating rate lower than 110 ℃/h, finally flow passage components are taken out to the bench vehicle type electrical resistance furnace air blast cooling to room temperature;
(2), tempering process: the flow passage components in room temperature after quenching are put into bench vehicle type electrical resistance furnace again, and be heated to 375～400 ℃ with the heating rate lower than 100 ℃/h, be incubated 5.5～6.5h in 375～400 ℃ of environment, after insulation, flow passage components taken out to bench vehicle type electrical resistance furnace and carry out natural air cooling;
(3), softening annealing: by the flow passage components after tempering in lower than 100 ℃, putting into bench vehicle type electrical resistance furnace, more than preheating insulation 2h, heating rate with 55～65 ℃/h is heated to 550～650 ℃ of insulation 0.5～1.5h, heating rate with 100～120 ℃/h is heated to 930～970 ℃ of insulation 2～4h again, cools to the furnace below 350 ℃ and comes out of the stove air cooling to room temperature;
Described flow passage components are comprised of the mass percentage content component, C2.9～3.3%, Cr24～28%, Si≤1.0%, Mn≤2.0%, Ni≤1.0%, Mo≤1.0%, Cu≤1.0%, P≤0.1%, S≤0.1%, Nb≤0.2%, V≤0.5%, surplus is Fe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210247766.0A CN102758072B (en) | 2012-07-17 | 2012-07-17 | Heat treatment process of flow passage component |
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|---|---|---|---|
| CN201210247766.0A CN102758072B (en) | 2012-07-17 | 2012-07-17 | Heat treatment process of flow passage component |
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| CN102758072B true CN102758072B (en) | 2014-01-08 |
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| CN106319335A (en) * | 2015-06-19 | 2017-01-11 | 石家庄栾兴泵业有限公司 | Antifriction cast iron for manufacturing flow passage component of slurry pump and heat treatment process of antifriction cast iron |
| CN107587030A (en) * | 2017-09-22 | 2018-01-16 | 徐工集团工程机械有限公司 | Paver screw material-distributing system, paver, helical blade and its manufacture method |
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Address after: 238200 Economic Development Zone of Maanshan City, Anhui Province Patentee after: SANLIANPUMP INDUSTRY Co.,Ltd. Address before: 238200 Economic Development Zone of Maanshan City, Anhui Province Patentee before: ANHUI SANLIAN PUMP INDUSTRY Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Heat treatment process of flow passage component Effective date of registration: 20190628 Granted publication date: 20140108 Pledgee: Revitalize the financing Company limited by guarantee in harmony with County Pledgor: SANLIANPUMP INDUSTRY Co.,Ltd. Registration number: 2019340000341 |
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Granted publication date: 20140108 Pledgee: Revitalize the financing Company limited by guarantee in harmony with County Pledgor: SANLIANPUMP INDUSTRY Co.,Ltd. Registration number: 2019340000341 |