CN203307378U - Special device for carrying out two-stage quenching heat treatment technology on crusher composite hammer head - Google Patents
Special device for carrying out two-stage quenching heat treatment technology on crusher composite hammer head Download PDFInfo
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- CN203307378U CN203307378U CN2013202496159U CN201320249615U CN203307378U CN 203307378 U CN203307378 U CN 203307378U CN 2013202496159 U CN2013202496159 U CN 2013202496159U CN 201320249615 U CN201320249615 U CN 201320249615U CN 203307378 U CN203307378 U CN 203307378U
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- 239000002131 composite material Substances 0.000 title claims abstract description 62
- 238000010791 quenching Methods 0.000 title claims abstract description 60
- 230000000171 quenching effect Effects 0.000 title claims abstract description 58
- 238000010438 heat treatment Methods 0.000 title claims abstract description 25
- 238000005516 engineering process Methods 0.000 title description 2
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000010276 construction Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 abstract description 20
- 239000000463 material Substances 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005336 cracking Methods 0.000 abstract description 3
- 238000007669 thermal treatment Methods 0.000 description 22
- 238000009413 insulation Methods 0.000 description 10
- 238000005496 tempering Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000003672 processing method Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000003082 abrasive agent Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 229910000734 martensite Inorganic materials 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 241000251131 Sphyrna Species 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model relates to a heat treatment technique of a wear-resistant material and in particular relates to a special device for realizing a two-stage quenching heat treatment technique on a crusher composite hammer head. The device specially used for realizing the two-stage quenching heat treatment technique on the crusher composite hammer head comprises two or more beams, a lifting lug, hooks and supports and is structurally characterized in that two or more beams are arranged at the top of the supports, and two or more beams are connected with the supports to form a frame structure; the lifting lug which can be connected with a lifting chain is arranged at the top of two or more beams, and the hooks at the same intervals are arranged between the supports at the bottom of two or more beams. By virtue of the special device for realizing the two-stage quenching heat treatment technique on the crusher composite hammer head, an oil cooling-air cooling two-stage quenching method is adopted, and the ratio of a quenching medium to the workpiece quality is controlled, so that the technical problems of cracking of the traditional oil quenching and low hardness of air cooling in the actual production of the crusher composite hammer head are successfully solved.
Description
Technical field
The utility model relates to the heat treatment technics of high-abrasive material, is specially a kind of special purpose device of twin-stage quenching heat treatment processing method of crusher composite hammer head.
Background technology
Along with improving constantly of China's industrial level, the Application Areas of high-abrasive material is very extensive, and consumption is increasing.According to statistics, the ferrous materials wear resistance castings of China's abrasive wear operating mode consumption in 2009 is more than 3,500,000 tons.And, at present just with the rate of increase rapid growth of average annual 5%-10% (Li Wei. the development of Chinese Foundry high-abrasive material. casting, 2012,9:967-984).
Grinder hammerhead is the crucial wear parts of hammer mill raw mineral materials in small, broken bits.According to its work characteristics, the head of grinder hammerhead must have higher wear resisting property, and hammer handle is shock-resistant again simultaneously.At present, material and the shape of tup are varied, but mainly divide two large classes, and a kind of is single material tup, and a kind of is the composite tup.Single material tup (as high mangaenese steel, low-alloy wear-resistant steel) manufacturing process is simple, but is difficult to take into account simultaneously higher wear resisting property and good toughness.The crusher composite hammer head is by composite casting method, and by the tup of unlike material and liquid deposited being integrated of hammer handle, when guaranteeing that tup has than high-wear resistance, hammer handle has good shock resistance.
The difference of crusher composite hammer head head and hammer handle material, cause its thermal treatment process very complicated, the problems such as crack defect and lower hardness in actual production, very easily occur.If adopt separately the mode of airblast quenching to heat-treat, composite hammer head head cooling rate is limited, in process of cooling, can only obtain perlite or partial martensite tissue, thereby causes lower hardness and cause the poor problem of wear resisting property; If adopt separately the mode of oil quenchinng to heat-treat, the poor thermal stresses that causes of rich chromium cast iron tup head thermal conductivity is larger, superimposed with the structural stress that martensitic transformation in process of cooling produces, and very easily produces serious cracking, directly causes scrapping.And in actual production process, the composite hammer head thermal treatment rear general employing boom hang integral body of coming out of the stove is quenched.But due to the restriction that is subject to hammer handle circular hole size, boom is thinner, easily bending causes tup to gather to centre, affects the quench cooled effect.In addition, the composite hammer head thermal treatment rear boom of coming out of the stove is comparatively complicated, consuming time longer, causes quenching temperature to control difficulty.
The utility model content
The purpose of this utility model is to provide a kind of special purpose device of twin-stage quenching heat treatment processing method of crusher composite hammer head, by the special hot treatment unit, the twin-stage quenching method that adopts oil cooling to combine with air cooling, and, by controlling the ratio of quenchant and workpiece quality, successfully solved the technical barrier such as traditional oil quenching cracking and air-cooled lower hardness in the actual production of crusher composite hammer head.
The technical solution of the utility model is:
A kind of special purpose device of twin-stage quenching heat treatment technique of crusher composite hammer head, special purpose device comprises crossbeam, hanger, hook, support, concrete structure is as follows:
Prop up top of the trellis crossbeam is set, crossbeam is two or more, and crossbeam and support are connected to form skeleton construction; The crossbeam top is provided with the hanger that can be connected with chain sling, and the crossbeam bottom, between support, is provided with the hook that spacing is identical.
When carrying out thermal treatment in enormous quantities, quenching oil is set in oil groove, the tup that spacing is identical fitly hangs on special purpose device, the special purpose device top is provided with chain sling, the special purpose device that will hang tup by chain sling is placed in quenching oil, carry out oil quenching thermal treatment, the frame part of special purpose device is positioned at oil groove inside.
When carrying out short run thermal treatment, quenching oil is set in oil groove, the tup that spacing is identical fitly hangs on special purpose device, the special purpose device top is provided with chain sling, by chain sling, the suspension tup on special purpose device is placed in to quenching oil, carry out oil quenching thermal treatment, the frame part of special purpose device is positioned at the oil groove outside.
The beneficial effects of the utility model are:
Compared with prior art, the utility model is by the thermal treatment special purpose device, the twin-stage quenching heat treatment processing method that adopts oil cooling-air cooling to combine, by controlling the ratio of quenchant quality and workpiece (or workpiece and device) quality, again through in low-temperaturetempering, obtained the high and inside and outside uniform high-wear resistance crusher composite hammer head of hardness, successfully solved the problem of crack defect and lower hardness, can make more than composite rich chromium cast iron tup hardness can reach 60HRC.Simultaneously, the utility model is heat-treated by special purpose device addi-tional crusher machine composite hammer head, tup evenly cooling, performance is consistent, and production efficiency is higher, technological operation is simple.
The accompanying drawing explanation
Fig. 1 is that the utility model crusher composite hammer head twin-stage quenches and middle low-temperature tempering heat treatment process schematic representation;
Fig. 2 (a) is crusher composite hammer head oil quenching thermal treatment in enormous quantities schematic diagram;
In figure, the 1-chain sling; The 2-quenching oil; The 3-special purpose device; The 4-oil groove; The 5-tup.
The special purpose device that Fig. 2 (b), Fig. 2 (c) are used while being thermal treatment in enormous quantities; Wherein, Fig. 2 (b) is front view; Fig. 2 (c) is side-view.
In figure, the 31-crossbeam; The 32-hanger; The 33-hook; The 34-support.
Fig. 3 (a), Fig. 3 (b) are crusher composite hammer head short run oil quenching thermal treatment schematic diagram; Wherein, Fig. 3 (a) is front view; Fig. 3 (b) is side-view.
The special purpose device that Fig. 3 (c), Fig. 3 (d) are used while being short run thermal treatment; Wherein, Fig. 3 (c) is front view; Fig. 3 (d) is side-view.
Embodiment
The twin-stage quenching heat treatment processing method of the utility model crusher composite hammer head, the tup that spacing is identical fitly hangs on special purpose device, unify shove charge, be heated to assigned temperature after insulation for some time, putting into fast to contain with the tup quality becomes the oil groove of specified proportion quenching oil to carry out oil quenching, when the tup surface temperature enters the certain temperature interval, take out air cooling to room temperature.Then, then carry out middle low-temperaturetempering, obtain required hardness requirement.As shown in Figure 1, detailed step is as follows:
1) special purpose device:
(1) thermal treatment in enormous quantities: as shown in Figure 2 (a) shows, quenching oil 2 is set in oil groove 4, the tup 5 that spacing is identical fitly hangs on special purpose device 3, and special purpose device 3 tops are provided with chain sling 1, the special purpose device 3 that will hang tup 5 by chain sling 1 is placed in quenching oil 2, carries out oil quenching thermal treatment.In the present embodiment, oil groove 4 volumes are larger, and the frame part of special purpose device 3 is positioned at oil groove inside.
Fig. 2 (b), Fig. 2 (c), the present embodiment special purpose device 3 comprises crossbeam 31, hanger 32, hook 33, support 34 etc., concrete structure is as follows:
Support 34 tops arrange crossbeam 31, and crossbeam 31 is two or more, and crossbeam 31 is connected to form skeleton construction with support 34; Crossbeam 31 tops are provided with the hanger 32 that can be connected with chain sling, and crossbeam 31 bottoms, between support 34, are provided with the hook 33 that spacing is identical.In the present embodiment, hook 33 is shorter, and while with the frame part that guarantees special purpose device 3, being positioned at oil groove inside, the tup 5 on hook 33 stretches in quenching oil 2.
(2) short run thermal treatment: Fig. 3 (a), Fig. 3 (b), quenching oil 2 is set in oil groove 4, the tup 5 that spacing is identical fitly hangs on special purpose device 3, special purpose device 3 tops are provided with chain sling 1, by chain sling 1, the suspension tup 5 on special purpose device 3 is placed in to quenching oil 2, carries out oil quenching thermal treatment.In the present embodiment, oil groove 4 small volumes, the frame part of special purpose device 3 is positioned at the oil groove outside.
Shown in Fig. 3 (c), Fig. 3 (d), the present embodiment special purpose device 3 comprises crossbeam 31, hanger 32, hook 33, support 34 etc., and concrete structure is as follows:
Support 34 tops arrange crossbeam 31, and crossbeam 31 is two or more, and crossbeam 31 is connected to form skeleton construction with support 34; Crossbeam 31 tops are provided with the hanger 32 that can be connected with chain sling, and crossbeam 31 bottoms, between support 34, are provided with the hook 33 that spacing is identical.In the present embodiment, hook 33 is longer, and while with the frame part that guarantees special purpose device 3, being positioned at the oil groove outside, the tup 5 on hook 33 stretches in quenching oil 2.
2) shove charge:
Crusher composite hammer head spacing is equated, fitly is suspended on special purpose device, and integral body is packed in heat treatment heating furnace equably together with special purpose device.Wherein, the spacing of crusher composite hammer head is relevant with the quenching oil volume to plant bulk, crusher composite hammer head lower surface apart from special purpose device support bottom in the 50-150mm scope.Crusher composite hammer head oil quenching thermal treatment in enormous quantities schematic diagram and special purpose device are respectively as shown in Fig. 2 (a)-(c).Crusher composite hammer head short run oil quenching thermal treatment schematic diagram and special purpose device are respectively as shown in Fig. 3 (a)-(d).
3) heat tracing:
When the crusher composite hammer head was preferably 60-100 ℃/h) temperature rise rate and is heated to 500-600 ℃ with≤100 ℃/h(, after samming 2-4h, heating with full power was incubated 2-6h to quenching temperature 900-1050 ℃ scope.
4) twin-stage quenches:
To in crusher composite hammer head (during short run thermal treatment) or crusher composite hammer head and special purpose device (the during thermal treatment in enormous quantities) oil groove of quenching fast, carry out oil quenching, oil quenching time 2-7min; When the head surface temperature of tup reaches martensite and starts transition temperature (Ms)-550 ℃, from oil groove, taking out the crusher composite hammer head, carry out air cooling.Wherein, during short run thermal treatment, in oil groove the quality of quenching oil be crusher composite hammer head total mass in oil groove 2-5 doubly; Perhaps, during thermal treatment in enormous quantities, in oil groove, the quality of quenching oil is crusher composite hammer head and special purpose device summation 2-5 times in oil groove.In the oil quenching process, sink to oil groove bottom by the crusher composite hammer head early stage, and roll, and stage can be by its slow oscilaltion, to realize accelerating the cooling and uniform purpose of heat radiation.
5) low-temperaturetempering in:
After the crusher composite hammer head is preferably to 40-80 ℃/h) temperature rise rate and is heated to the 200-500 ℃ of warm 4-12h of insulation with≤100 ℃/h(, be cooled to room temperature in the cold mode of stove.
Embodiment 1
By the hammer handle material, be 45
#Steel, head material are the large specification crusher composite hammer head of KmTBCr15Mo, equidistant hanging on special purpose device, and integral body is packed in the high temperature resistance process furnace equably together with special purpose device.While with the average temperature rise rate of 75 ℃/h, being heated to 520 ℃ after samming 2h, heating with full power, to 1050 ℃ of insulation 3h of quenching temperature, is carried out oil quenching in the oil groove of fast crusher composite hammer head and special purpose device being quenched simultaneously in 1.5min.After cooling 3min, when surface temperature reached 450 ℃, from whole crusher composite hammer head and the special purpose device of taking out oil groove, air cooling was to room temperature in oil groove.Then, in the middle temperature resistance heading furnace of separately the crusher composite hammer head being packed into, after with the average temperature rise rate of 60 ℃/h, being heated to 400 ℃ of insulation 6h, stove is chilled to room temperature.Wherein, in oil groove, the quality of quenching oil is 4 times of crusher composite hammer head total mass in oil groove.Crusher composite hammer head thickness 40mm, after tempering heat treatment, average hardness is 63HRC, impelling strength is 9J/cm
2.
By the hammer handle material, be that 35Mn, head material are the small dimension crusher composite hammer head of KmTBCr20Mo, equidistant hanging on special purpose device, integral body is packed in the high temperature resistance process furnace equably together with special purpose device.While with the average temperature rise rate of 100 ℃/h, being heated to 600 ℃ after samming 3h, heating with full power, to 950 ℃ of insulation 4h of quenching temperature, is carried out oil quenching in the oil groove of fast crusher composite hammer head and special purpose device being quenched simultaneously in 1min.After cooling 5min, when surface temperature reached 350 ℃, from whole crusher composite hammer head and the special purpose device of taking out oil groove, air cooling was to room temperature in oil groove.Then, in the middle temperature resistance heading furnace of separately the crusher composite hammer head being packed into, after with the average temperature rise rate of 75 ℃/h, being heated to 300 ℃ of insulation 10h, stove is chilled to room temperature.Wherein, in oil groove, the quality of quenching oil is crusher composite hammer head and special purpose device summation 5 times.Crusher composite hammer head thickness 60mm, after tempering heat treatment, average hardness is 65HRC, impelling strength is 6J/cm
2.
By the hammer handle material, be that 45# steel, head material are the large specification crusher composite hammer head of KmTBCr15Mo, equidistant hanging on special purpose device, integral body is packed in the high temperature resistance process furnace equably together with special purpose device.While with the average temperature rise rate of 70 ℃/h, being heated to 550 ℃ after samming 3.5h, heating with full power, to 1000 ℃ of insulation 3h of quenching temperature, is carried out oil quenching in the oil groove of fast crusher composite hammer head and special purpose device being quenched simultaneously in 1.5min.After cooling 4min, when surface temperature reached 480 ℃, from whole crusher composite hammer head and the special purpose device of taking out oil groove, air cooling was to room temperature in oil groove.Then, in the middle temperature resistance heading furnace of separately the crusher composite hammer head being packed into, after with the average temperature rise rate of 50 ℃/h, being heated to 450 ℃ of insulation 4h, stove is chilled to room temperature.Wherein, in oil groove, the quality of quenching oil is 3 times of crusher composite hammer head total mass in oil groove.Crusher composite hammer head thickness 40mm, after tempering heat treatment, average hardness is 62HRC, impelling strength is 10J/cm
2.
By the hammer handle material, be that 35Mn, head material are the small dimension crusher composite hammer head of KmTBCr20Mo, equidistant hanging on special purpose device, integral body is packed in the high temperature resistance process furnace equably together with special purpose device.While with the average temperature rise rate of 90 ℃/h, being heated to 580 ℃ after samming 2.5h, heating with full power, to 930 ℃ of insulation 4h of quenching temperature, is carried out oil quenching in the oil groove of fast crusher composite hammer head and special purpose device being quenched simultaneously in 1min.After cooling 6min, when surface temperature reached 300 ℃, from whole crusher composite hammer head and the special purpose device of taking out oil groove, air cooling was to room temperature in oil groove.Then, in the middle temperature resistance heading furnace of separately the crusher composite hammer head being packed into, after with the average temperature rise rate of 80 ℃/h, being heated to 350 ℃ of insulation 8h, stove is chilled to room temperature.Wherein, in oil groove, the quality of quenching oil is crusher composite hammer head and special purpose device summation 4 times.Crusher composite hammer head thickness 60mm, after tempering heat treatment, average hardness is 64HRC, impelling strength is 7J/cm
2.
Claims (1)
1. the special purpose device of the twin-stage quenching heat treatment technique of a crusher composite hammer head, it is characterized in that: special purpose device comprises crossbeam, hanger, hook, support, and concrete structure is as follows:
Prop up top of the trellis crossbeam is set, crossbeam is two or more, and crossbeam and support are connected to form skeleton construction; The crossbeam top is provided with the hanger that can be connected with chain sling, and the crossbeam bottom, between support, is provided with the hook that spacing is identical.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202496159U CN203307378U (en) | 2013-05-09 | 2013-05-09 | Special device for carrying out two-stage quenching heat treatment technology on crusher composite hammer head |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013202496159U CN203307378U (en) | 2013-05-09 | 2013-05-09 | Special device for carrying out two-stage quenching heat treatment technology on crusher composite hammer head |
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| CN203307378U true CN203307378U (en) | 2013-11-27 |
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| CN2013202496159U Expired - Fee Related CN203307378U (en) | 2013-05-09 | 2013-05-09 | Special device for carrying out two-stage quenching heat treatment technology on crusher composite hammer head |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243210A (en) * | 2013-05-09 | 2013-08-14 | 中国科学院金属研究所 | Two-stage quenching heat treatment process method of crusher combined hammer head and special device thereof |
| CN108893578A (en) * | 2018-06-15 | 2018-11-27 | 邯郸慧桥复合材料科技有限公司 | A kind of double tissue process for quenching of steel alloy |
-
2013
- 2013-05-09 CN CN2013202496159U patent/CN203307378U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243210A (en) * | 2013-05-09 | 2013-08-14 | 中国科学院金属研究所 | Two-stage quenching heat treatment process method of crusher combined hammer head and special device thereof |
| CN108893578A (en) * | 2018-06-15 | 2018-11-27 | 邯郸慧桥复合材料科技有限公司 | A kind of double tissue process for quenching of steel alloy |
| CN108893578B (en) * | 2018-06-15 | 2020-01-03 | 邯郸慧桥复合材料科技有限公司 | Alloy steel double-structure quenching method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20140509 |