CN202297699U - Continuous protective atmosphere heating high-pressure gas quenching furnace - Google Patents
Continuous protective atmosphere heating high-pressure gas quenching furnace Download PDFInfo
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- CN202297699U CN202297699U CN2011203821789U CN201120382178U CN202297699U CN 202297699 U CN202297699 U CN 202297699U CN 2011203821789 U CN2011203821789 U CN 2011203821789U CN 201120382178 U CN201120382178 U CN 201120382178U CN 202297699 U CN202297699 U CN 202297699U
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- protective atmosphere
- gas quenching
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Abstract
The utility model discloses a continuous protective atmosphere heating high-pressure gas quenching furnace. The continuous protective atmosphere heating high-pressure gas quenching furnace is characterized by comprising a continuous protective atmosphere heating furnace which comprises a vacuum gas exchange front chamber, a heating area and a heat preservation area; the heat preservation area of the continuous protective atmosphere heating furnace is in sealed connection with a high-pressure gas quenching chamber; and the high-pressure gas quenching chamber is in sealed connection with a vacuum gas exchange discharging chamber which is used for preventing air from entering the heating area, shortening gas exchange time, and reducing consumption of nitrogen. The heating area and the heat preservation area are both protective atmosphere heating furnaces, and protective gas can be nitrogen-methanol atmosphere or nitrogen ammonification pyrolysis gas. The vacuum gas exchange discharging chamber is used for preventing air from entering the high-pressure gas quenching chamber. The continuous protective atmosphere heating high-pressure gas quenching furnace can reduce investment cost of equipment and energy consumption, and improve quenching severity of high-pressure gas quenching, and automation degree of equipment, and reduce labor intensity and labor cost.
Description
Technical field
The utility model relates to a kind of continous way protective atmosphere heating high-pressure gas quenching furnace.
Background technology
Following method is adopted in the thermal treatment of the low-carbon alloy steel carburized parts of having relatively high expectations for distortion and degree of cleaning at present: the first step: in slow cooling under
protective atmosphere after the atmosphere furnace carburizing, perhaps in vacuum oven, carry out low-pressure carburization slow cooling afterwards or gas quench (increasing temperature tempering); Second step: carry out precision work; The 3rd step: in vacuum oven, carry out high pressure gas quenching again.What the 3rd step was general used all is the single chamber vacuum furnace that single heat is handled, with reference to shown in Figure 1.Adopt the shortcoming of vacuum oven to be: the vacuum oven equipment cost is higher; Heating chamber is together by repeated heating and cooling, thereby energy consumption is big; One-way fired furnace is not enough than the quenching intensity of ambassador's workpiece because of batch, can only reduce batch, and actual efficiency is not high.
Quenching intensity requires when high, also has to adopt two chamber vacuum furnace.But because vacuum oven heating system and refractory materials at high temperature can not be seen air, so all adopt the mode of simple gate input and output material.Open the door in general cold house (gas quench chamber), heating chamber is in the back, cold house, and middle door is vacuum and high pressure seal.The shortcoming of this structure is: cold and hot chamber takes turns to operate, and heating chamber was idle when gas was quenched, but must keep high temperature and vacuum tightness, so plant factor is low, energy consumption is high.Another kind of dual chamber furnace is that heating chamber opens the door, and gas is quenched the chamber in the back.Part must be come out of the stove from heating chamber after gas was quenched, so heating chamber also must cooling before coming out of the stove.Promptly except that cold and hot chamber utilization ratio was low, heating chamber was the same with one-way fired furnace, also is repeated heating and refrigerative, so energy consumption is higher.Dual chamber furnace complex structure in addition, two sects all must vacuum-sealing and high pressure seals.Back chamber also must be provided with access door.The stove domestic demand is provided with the push-and-pull material mechanism of under vacuum state, working.Because under vacuum state, the running gear lack of lubrication is so the pusher failure rate is high.
The utility model content
The utility model technical problem to be solved is to reduce equipment investment cost and energy consumption, the quenching intensity that improves high pressure gas quenching; Improve automation degree of equipment, reduce labour intensity and cost of labor.
In order to solve the problems of the technologies described above, the technical scheme of the utility model is following:
A kind of continous way protective atmosphere heating high-pressure gas quenching furnace; It is characterized in that; Comprise continous way protective atmosphere process furnace; The protective atmosphere process furnace comprises vacuum air-changing cup, heating zone and heat preservation zone, the heat preservation zone of the continous way protective atmosphere process furnace high pressure gas quenching chamber that is tightly connected, the high pressure gas quenching chamber vacuum air-changing discharge chamber that is tightly connected.The effect of vacuum air-changing cup is to avoid the air admission heating zone, and shortens time of exchanging gas, reduces nitrogen consumption.Heating chamber and heat preservation zone are the protective atmosphere process furnace, and protection gas can be that n-formyl sarcolysine alcohol atmosphere or nitrogen add ammonia pyrolysis gas.The effect of vacuum air-changing discharge chamber is to prevent air admission high pressure gas quenching chamber.
Described vacuum air-changing cup is divided into upper and lower two Room; A double-deck lifting table is set in the vacuum air-changing cup, and lower floor is a material level, and the upper strata is the forvacuum lid; The forvacuum lid connects the forvacuum system; When double-deck lifting table is in when the next, the base plate sealing of the last chamber of forvacuum lid and vacuum air-changing cup makes down the chamber become the confined chamber of vacuum-pumping
Compared with prior art, the beneficial effect of the utility model is:
(1), heating chamber is in Heating temperature all the time, avoids heating chamber to cool off repeatedly and heats, energy consumption is low;
(2), heating chamber is in normal pressure (pressure-fired) state all the time, is common welded steel structure, low cost of manufacture;
(3), the high pressure gas quenching chamber is under the low-temperature condition all the time, avoided equally cooling off repeatedly and heating, also need not to consider must adopt cost than higher fire-resistant heat insulating material because of repeated heating and cooling.Not only energy-conservation, and quenching intensity is high, and under same stocking space and cooling power prerequisite, batch is big, or under same batch condition, low to quenching circulation motor power requirement, reduce influence to electrical network, equipment cost is also lower;
(4), folk prescription is to logistics, equipment work chamber utilization ratio is high, wastes lowly, also is prone to simultaneously improve level of automation, hand labor intensity is low;
(5), adopt chamber after vacuum air-changing cup and the discharging, scavenging efficiency is high, reduces the consumption of ventilation nitrogen.
Description of drawings
Fig. 1 is the single chamber vacuum furnace structural representation;
Fig. 2 is a continous way protective atmosphere heating high-pressure gas quenching furnace structural representation;
Fig. 3 is an A-A sectional view among Fig. 2.
Among the figure, the 1-feeding area, the 2-feeding unit, the Pneumatic reverse turning bed door of 3-, 4-vacuum air-changing cup, 5-first interval is popular; The 6-heating zone, the 7-first flexible chain pusher, 8-first locating device, 9-second interval is popular, 10-heat preservation zone, the 11-second flexible chain pusher; 12-second locating device, 13-the 3rd interval is popular, 14-high pressure gas quenching chamber, 15-vacuum air-changing discharge chamber, 16-lifting table; 17-discharging area, the built-in feeding gate of 18-, the 19-gas recirculation blower of quenching, the built-in discharge door of 20-, 21-discharging external door; 22-atmosphere recirculation blower, 23-electrically heated radiator tube, 24-fire door, 25-hot-zone, 26-heating system; The 27-gas airflow-reversing baffle plate of quenching, 28-heating cycle blower fan, 29-airflow-reversing baffle plate, 30-water cooler, the 31-gas recirculation blower of quenching.
Embodiment
With reference to Fig. 2 and shown in Figure 3, continous way protective atmosphere heating high-pressure gas quenching furnace comprises continous way protective atmosphere process furnace, the heat preservation zone 10 of the protective atmosphere process furnace high pressure gas quenching chamber 14 that is tightly connected, the high pressure gas quenching chamber 14 vacuum air-changing discharge chamber 15 that is tightly connected.
Described protective atmosphere process furnace comprises vacuum air-changing cup 4, heating zone 6 and heat preservation zone 10; Vacuum air-changing cup 4 is the bottom charging method; Vacuum air-changing cup 4 is divided into two Room, and following chamber is provided with Pneumatic reverse turning bed door 3 and feeds from feeding area 1 through feeding unit 2, the forvacuum ventilation of following chamber level charging back; Last chamber is the pusher transition chamber, is normal protective atmosphere environment.Pusher transition chamber and heating zone 6 separate through first interval popular 5.A double-deck lifting table is set in the vacuum air-changing cup 4, and lower floor is a material level, and the upper strata is the forvacuum lid.The forvacuum lid connects the forvacuum system and (comprises a sliding vane rotary pump, Pneumatic butterfly valve, vacuumometer, tensimeter, pipeline etc.), nitrogen adds ammonia pyrolysis gas as heated protective atmosphere.When double-deck lifting table is in when the next, and the end blocking door of feeding from the outside is when closing, and the base plate sealing of the last chamber of upper strata forvacuum lid and vacuum air-changing cup 4 makes down the chamber become the confined chamber of vacuum-pumping.When lifting table is in when upper, lower floor's material level has identical transmission height with stove.Heating zone 6 is separated by second interval popular 9 with heat preservation zone 10, and 6 charging trays are promoted by the double rack pusher in the heating zone, and reducing motor drives.Promoted by the first flexible chain pusher 7 at heat preservation zone 10 charging trays, reducing motor drives.Charging tray from moist closet 10 to high pressure gas quenching chamber 14 shifts by the second flexible chain pusher 11 and promotes, and variable frequency reducer motor drives.Heating zone 6 is respectively equipped with first locating device 8 and second locating device 12 with heat preservation zone 10.Heat with the vertically arranged electrically heated radiator tube 23 that heat preservation zone 10 employing both sides are arranged heating zone 6.Furnace roof is installed atmosphere recirculation blower 22 and is used for the powerful stirring of atmosphere.Be provided with the 3rd interval popular 13 between heat preservation zone 10 and the high pressure gas quenching chamber 14.
Double wall water-cooled vessel shell is adopted in described high pressure gas quenching chamber 14, is fit to high pressure gas quenching.High pressure gas quenching chamber 14 is through structure, is with a high pressure resistant built-in feeding gate 18 and a built-in discharge door 20.Built-in feeding gate 18 and built-in discharge door 20 by on put air cylinder driven.High pressure gas quenching chamber 14 built-in water-cooling interchanger, water cooling heat exchanger is the coil tube type structure, the band radiating fin.Be provided with the gas of forming by centrifugation blade and the motor recirculation blower 19 of quenching in the high pressure gas quenching chamber 14.High pressure gas quenching chamber 14 connects nitrogen circulating system, and nitrogen circulating system connects inflation pressure control and blow-off system.Vacuum air-changing discharge chamber 15 is used for vacuumizing ventilation after the discharging.Vacuum air-changing discharge chamber 15 has the discharging external door 21 of air cylinder driven, and the discharging transition chamber vacuum is sealed.The discharging external door 21 outer lifting tables 16 that are provided with, lifting table 16 connects discharging area 17.
Claims (2)
1. continous way protective atmosphere heating high-pressure gas quenching furnace; It is characterized in that; Comprise continous way protective atmosphere process furnace; The protective atmosphere process furnace comprises vacuum air-changing cup (4), heating zone (6) and heat preservation zone (10), the heat preservation zone (10) of the continous way protective atmosphere process furnace high pressure gas quenching chamber (14) that is tightly connected, high pressure gas quenching chamber (14) the vacuum air-changing discharge chamber (15) that is tightly connected.
2. continous way protective atmosphere heating high-pressure gas quenching furnace as claimed in claim 1 is characterized in that described vacuum air-changing cup (4) is divided into upper and lower two Room; A double-deck lifting table is set in the vacuum air-changing cup (4), and lower floor is a material level, and the upper strata is the forvacuum lid; The forvacuum lid connects the forvacuum system; When double-deck lifting table is in when the next, the base plate sealing of the last chamber of forvacuum lid and vacuum air-changing cup (4) makes down the chamber become the confined chamber of vacuum-pumping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203821789U CN202297699U (en) | 2011-10-10 | 2011-10-10 | Continuous protective atmosphere heating high-pressure gas quenching furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203821789U CN202297699U (en) | 2011-10-10 | 2011-10-10 | Continuous protective atmosphere heating high-pressure gas quenching furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202297699U true CN202297699U (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203821789U Expired - Lifetime CN202297699U (en) | 2011-10-10 | 2011-10-10 | Continuous protective atmosphere heating high-pressure gas quenching furnace |
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| Country | Link |
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| CN (1) | CN202297699U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031415A (en) * | 2011-10-10 | 2013-04-10 | 上海汇森益发工业炉有限公司 | Continuous protective atmosphere heating high-pressure gas quenching furnace |
| CN106500503A (en) * | 2016-12-26 | 2017-03-15 | 沈阳恒进真空科技有限公司 | Multifunction vacuum furnace |
| CN111283389A (en) * | 2020-03-17 | 2020-06-16 | 无锡鹰贝精密轴承有限公司 | End face grinding process for wear-resisting disc of hydraulic motor |
| CN113774205A (en) * | 2021-09-15 | 2021-12-10 | 江苏丰东热技术有限公司 | Pre-vacuumizing controllable atmosphere heat treatment furnace |
-
2011
- 2011-10-10 CN CN2011203821789U patent/CN202297699U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031415A (en) * | 2011-10-10 | 2013-04-10 | 上海汇森益发工业炉有限公司 | Continuous protective atmosphere heating high-pressure gas quenching furnace |
| CN106500503A (en) * | 2016-12-26 | 2017-03-15 | 沈阳恒进真空科技有限公司 | Multifunction vacuum furnace |
| CN111283389A (en) * | 2020-03-17 | 2020-06-16 | 无锡鹰贝精密轴承有限公司 | End face grinding process for wear-resisting disc of hydraulic motor |
| CN111283389B (en) * | 2020-03-17 | 2021-10-22 | 无锡鹰贝精密液压有限公司 | End face grinding process for wear-resisting disc of hydraulic motor |
| CN113774205A (en) * | 2021-09-15 | 2021-12-10 | 江苏丰东热技术有限公司 | Pre-vacuumizing controllable atmosphere heat treatment furnace |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |
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| CX01 | Expiry of patent term |