CN202220189U - Continuous type protective atmosphere heating high-pressure gas quenching furnace - Google Patents
Continuous type protective atmosphere heating high-pressure gas quenching furnace Download PDFInfo
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- CN202220189U CN202220189U CN2011202828314U CN201120282831U CN202220189U CN 202220189 U CN202220189 U CN 202220189U CN 2011202828314 U CN2011202828314 U CN 2011202828314U CN 201120282831 U CN201120282831 U CN 201120282831U CN 202220189 U CN202220189 U CN 202220189U
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Abstract
The utility model discloses a continuous type protective atmosphere heating high-pressure gas quenching furnace which is characterized in that the gas quenching furnace comprises a continuous type protective atmosphere heating furnace, and the protective atmosphere heating furnace comprises a front vacuum air-changing chamber, a heating area and a heat preservation area; and the heat preservation area of the continuous type protective atmosphere heating furnace is in seal connection with a high-pressure gas quenching chamber which is in seal connection with a vacuum air-changing discharge chamber. The front vacuum air-changing chamber plays a role in preventing the air entering the heating area, shortening the air-changing time and reducing the consumption of nitrogen. A heating chamber and the heat preservation area are used as the protective atmosphere heating furnace, and protective gas can be nitrogen-methanol atmosphere or nitrogen ammonification pyrolysis gas. The vacuum air-changing discharge chamber plays a role in preventing the air entering the high-pressure gas quenching chamber. The continuous type protective atmosphere heating high-pressure gas quenching furnace can reduce the investment cost and the energy consumption of equipment, improve the high-pressure gas quenching severity, improve the automaticity of the equipment and reduce the labor intensity and the labor cost.
Description
Technical field
The present invention 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 the protective atmosphere again 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; The quenching intensity of one-way fired furnace workpiece is not enough, can only reduce batch, and actual efficiency is not high.
Quenching intensity requires the employing two chamber vacuum furnace is also arranged when high.But because vacuum oven heating system and refractory materials can not be seen air at high temperature, 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, middle door 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 also must cooling before coming out of the stove.Promptly go out cold and hot chamber utilization ratio low outside, heating chamber is 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 must slow vacuum-sealing and high pressure seal.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.
Summary of the invention
Technical problem to be solved by this invention is to reduce equipment investment cost and energy consumption, improves the high pressure gas quenching quenching intensity; Improve automation degree of equipment, reduce labour intensity and cost of labor.
In order to solve the problems of the technologies described above, technical scheme of the present invention 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, beneficial effect of the present invention 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, under same stocking space and cooling power prerequisite; Batch is big, or under same batch condition, low to quenching circulation motor power requirement; Minimizing is to the influence of electrical network, and 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 are popular, 10-heat preservation zone, the 11-second flexible chain pusher; 12-second locating device, 13 the 3rd interval are 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 |
|---|---|---|---|
| CN2011202828314U CN202220189U (en) | 2011-08-05 | 2011-08-05 | Continuous type protective atmosphere heating high-pressure gas quenching furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202828314U CN202220189U (en) | 2011-08-05 | 2011-08-05 | Continuous type protective atmosphere heating high-pressure gas quenching furnace |
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| Publication Number | Publication Date |
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| CN202220189U true CN202220189U (en) | 2012-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202828314U Expired - Lifetime CN202220189U (en) | 2011-08-05 | 2011-08-05 | Continuous type protective atmosphere heating high-pressure gas quenching furnace |
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| Country | Link |
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| CN (1) | CN202220189U (en) |
Cited By (3)
| 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 |
| CN110453058A (en) * | 2019-08-09 | 2019-11-15 | 江苏良川科技发展有限公司 | A kind of amino atmosphere roller stick furnace production system |
| CN111424148A (en) * | 2020-05-14 | 2020-07-17 | 兰州广合新材料科技有限公司 | Equipment and method for continuously and periodically performing vacuum heat treatment on workpiece |
-
2011
- 2011-08-05 CN CN2011202828314U patent/CN202220189U/en not_active Expired - Lifetime
Cited By (3)
| 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 |
| CN110453058A (en) * | 2019-08-09 | 2019-11-15 | 江苏良川科技发展有限公司 | A kind of amino atmosphere roller stick furnace production system |
| CN111424148A (en) * | 2020-05-14 | 2020-07-17 | 兰州广合新材料科技有限公司 | Equipment and method for continuously and periodically performing vacuum heat treatment on workpiece |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120516 |