CN2409470Y - Hydrogen protecting furnace for pressurizing sintering diamond products - Google Patents
Hydrogen protecting furnace for pressurizing sintering diamond products Download PDFInfo
- Publication number
- CN2409470Y CN2409470Y CN 99258188 CN99258188U CN2409470Y CN 2409470 Y CN2409470 Y CN 2409470Y CN 99258188 CN99258188 CN 99258188 CN 99258188 U CN99258188 U CN 99258188U CN 2409470 Y CN2409470 Y CN 2409470Y
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- Prior art keywords
- furnace
- oil
- bell
- flue
- hydrogen
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a hydrogen protecting furnace for pressurizing and sintering diamond products. The utility model is designed and improved on the exiting non-pressurized hydrogen protecting sintering furnace. The utility model is characterized in that a machine frame is composed of a furnace cover and a support plate by three draw rods in a furnace liner; the center of the furnace cover is provided with an oil hydraulic cylinder, and the oil pressure is adjustable; the lower part of the oil hydraulic cylinder is provided with a water cooling press rod which presses against the work piece; the combining part of the upper edge of the furnace liner and the furnace cover is provided with a sand seal groove. The pressurized and sintered product has high density, and the service life is improved.
Description
The utility model relates to a kind of hydrogen shield stove of pressure sintering diamond composition, belongs to the hot-pressed sintering furnace technical field that powder metallurgic method is made artificial diamond's stone manufacture of super-hard abrasive tool.
The present common employing of domestic sintered diamond goods pressureless sintering in hydrogen gas, flue among Fig. 1 (26) and the bell (1) of thermoelectric pot (11), hydrogen inlet (12) and hydrogen outlet (18) is housed; Sintering process is that the diamond face pressed compact (25) that burn at the end graphite of packing into is burnt in the boat (24); wear bunchiness by centre bore; put into flue (26); cover bell (1); hang in furnace wall (14) and go up in the pit furnace thorax (15) of dress resistance wire (16), by hydrogen shield heating, insulation; hang out flue, cool off, come out of the stove, its weak point is that the diamond composition density of sintering is little, hardness is low, the life-span is short.The factory that has adopts the hot press of unprotect hydrogen; production efficiency is low; easily oxidation; especially in summer, the easy oxidation of bortz powder and can not reducing, the producer that also has is from external import vacuum hotpressing machine; apparatus expensive reaches 1,200,000 yuan; and need a large amount of metal dies, and the expense height, its kind, specification all are restricted.
The purpose of this utility model is the shortcoming at above-mentioned thermal sintering diamond composition, designs a kind of hydrogen shield stove of pressure sintering diamond composition, with density, the hardness of raising sintered metal product, thus the service life of improving goods.
For achieving the above object, the utility model adopts following proposal (shown in Fig. 1-4).
The utility model is the invention that hydraulic press and hydrogen sintering furnace are combined, at the included flue of original technology (26) with thermoelectric pot (11) hydrogen inlet (12) is housed, the bell (1) of hydrogen outlet (18), flue (26) places the pit furnace thorax (15) that electric furnace heating wire (16) is housed on the furnace wall (14), the utility model improves on this basis, in flue (26) bell (1) and supporting plate (28) is formed frame with three pull bars (21) and nut (27); Oil hydraulic cylinder (8) is housed on the bell (1), connects with the oil pressure station by oil hydraulic cylinder oil filler (9); Oil hydraulic cylinder also has oil-out (6), regulate the control oil pressure by the gateway switch, oil hydraulic cylinder (8) is the depression bar (7) of tape splicing water collar (4) down, oil pressure is passed to upper padding plate (22) and cushion block (23), between the workpiece (25) of supporting plate (28) and band graphite boat (24) lower bolster (29) is arranged, the water collar (4) of depression bar (7) has filler (5) and delivery port (10); Be provided with cooling water pipe (19) in pull bar (21) hollow; there are cooling water inlet (3) and coolant outlet (2) in its upper end; its outer thermal insulation protection cover and sleeve pipe (20) of being with; bell (1) is the cylindrical hollow housing; the space of occupying the space in press rods (7) and pull bar (21) system is filled with heat-barrier material, and flue (26) upper edge and bell (1) junction are provided with sand sealing groove (17).
Advantage of the present utility model and effect:
1, product A 230 saw blades with existing sintering furnace production compare, and data are as follows:
Ordinary sinter product density 7.7g/cm
3, hardness HRB90.3, the life-span can be cut 20mm granite slabstone 175 linear meters.
The utility model product hot pressing product density 8.12g/cm
3, hardness HRB95.25, the life-span can be cut the thick granite slabstone of 20mm linear meter.
2, safe and reliable to operation, operating maintenance is convenient, because of logical hydrogen in the stove, will explode just in case enter a certain amount of air, and hydraulic press and bell are one, can freely fluctuate in flue, both cover with slot type sand seal, explosion time be whole bell together with press float, gas emits from sand seal, cooling jacket is removable, is convenient to maintenance, and the pressurize of Hydraulic Station pressure control is easy to operate.
3, reduced investment with existing no pressue device stove, is transformed into the stove of band hydraulic press, and every investment increases about 30,000 yuan, and wants 1,200,000 yuan at Italian import vacuum hotpressing stove, and wants supporting a large amount of metal dies.
4, instant effect only has about three months to going into operation from scrap build, development, test run.
Description of drawings:
Fig. 1 the utility model is along longitudinal axis portion view.
The profilograph of Fig. 2 pull bar.
Fig. 3 pull bar upper end delivery port partial sectional view.
The side view of Fig. 4 Fig. 3.
Embodiment:
1, the seal with elastometic washer of twice O shape is arranged between depression bar (7) and the depression bar water collar (4), water collar (4) bottom is provided with heat-insulation layer, to reduce heat loss.
2, pull bar (21) adopts the heavy wall stainless steel tube, and there is cooling water pipe (19) centre, outer periphery heat-barrier coating and sleeve pipe (20), and the cooling water of three pull bars (21) is series connection.
3, flue (26) is made with heat-resistance stainless steel, the heat-resisting spheroidal graphite cast-iron of supporting plate.
4, oil hydraulic cylinder (8) high-pressure hose and packaged type maximum pressure 31.5MPa, the Hydraulic Station of 15 liters/min of maximum stream flow links.
Claims (4)
1, a kind of hydrogen shield stove of pressure sintering diamond composition, flue (26) and the bell (1) of thermocouple (11), hydrogen inlet (12) and hydrogen outlet (18) is housed, flue (26) places on the furnace wall (14), be equipped with in the pit furnace thorax (15) of resistance wire (16), it is characterized in that: in flue (26), bell (1) and supporting plate (28) are formed with three pull bars (21) and nut (27), oil hydraulic cylinder (8) is housed on the bell (1), connects with the oil pressure station by oil hydraulic cylinder oil filler (9); Oil hydraulic cylinder also has oil-out (6), regulate the control oil pressure by the entry and exit switch, oil hydraulic cylinder (8) is the depression bar (7) of tape splicing water collar (4) down, oil pressure is passed to upper padding plate (22) and cushion block (23), the workpiece 925 of supporting plate (28) and band graphite boat (24)) between lower bolster (29) is arranged, the water collar (4) of depression bar (7) has filler (5) and delivery port (10); Be provided with cooling water pipe (19) in pull bar (21) hollow; there are cooling water inlet (3) and coolant outlet (2) in its upper end; its outer thermal insulation protection cover and sleeve pipe (20) of being with; bell (1) is the cylindrical hollow housing; the space of occupying the space in press rods (7) and pull bar (21) system is filled with heat-barrier material, and flue (26) upper edge and bell (1) junction are provided with sand sealing groove (17).
2, the hydrogen shield stove of pressure sintering diamond composition according to claim 1 is characterized in that twice O type rubber ring is arranged between described depression bar (7) and its water collar.
3, the hydrogen shield stove of pressure sintering diamond composition according to claim 1 is characterized in that described pull bar adopts the heavy wall stainless steel tube, and the cooling water of three pull bars adopts series system.
4, the hydrogen shield stove of pressure sintering diamond composition according to claim 1 is characterized in that described flue adopts the manufacturing of heavy wall heat-resistance stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99258188 CN2409470Y (en) | 1999-12-29 | 1999-12-29 | Hydrogen protecting furnace for pressurizing sintering diamond products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99258188 CN2409470Y (en) | 1999-12-29 | 1999-12-29 | Hydrogen protecting furnace for pressurizing sintering diamond products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2409470Y true CN2409470Y (en) | 2000-12-06 |
Family
ID=34040882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99258188 Expired - Fee Related CN2409470Y (en) | 1999-12-29 | 1999-12-29 | Hydrogen protecting furnace for pressurizing sintering diamond products |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2409470Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197695A (en) * | 2014-07-31 | 2014-12-10 | 红安安达新材料有限责任公司 | Vacuum furnace |
| CN104263969A (en) * | 2014-09-09 | 2015-01-07 | 江苏大学 | Furnace pipe device and method for preparing ultra-high purity aluminum |
| CN106524769A (en) * | 2016-11-14 | 2017-03-22 | 上海皓越电炉技术有限公司 | One-way hot-press sintering furnace |
-
1999
- 1999-12-29 CN CN 99258188 patent/CN2409470Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197695A (en) * | 2014-07-31 | 2014-12-10 | 红安安达新材料有限责任公司 | Vacuum furnace |
| CN104263969A (en) * | 2014-09-09 | 2015-01-07 | 江苏大学 | Furnace pipe device and method for preparing ultra-high purity aluminum |
| CN104263969B (en) * | 2014-09-09 | 2016-04-27 | 江苏大学 | A kind of flue apparatus and method for the preparation of ultra-pure aluminum |
| CN106524769A (en) * | 2016-11-14 | 2017-03-22 | 上海皓越电炉技术有限公司 | One-way hot-press sintering furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |