CN2129007Y

CN2129007Y - Extraction type sintering electric furnace

Info

Publication number: CN2129007Y
Application number: CN 92223934
Authority: CN
Inventors: 孙俊图; 邓开金
Original assignee: SHAAXI MECHANICAL ENGINEERING COLLEGE
Current assignee: SHAAXI MECHANICAL ENGINEERING COLLEGE
Priority date: 1992-06-03
Filing date: 1992-06-03
Publication date: 1993-03-31
Anticipated expiration: 2002-06-03

Abstract

The utility model relates to a return-heating type continuous high temperature and hot-pressed sintering resistance furnace, which is provided with a separate hot-pressed chamber, a return heating chamber and a front chamber. The heat exchange happens in the return heating chamber between the freshly feed-in charging cold mould which requires preheating and the charging mould which requires cooling after thermal insulating and pressure maintaining, that is to say, the cold mould is preheated, and the hot mould is cooled. The fast cooling of the hot mould is achieved, which improves the quality of hot press and makes the waste heat recovered to utilize circularly, and thus the purpose of energy saving is achieved. The utility model has the advantages of waste heat recovery, fast cooling after hot press, electricity saving, water saving, gas saving, high production efficiency, convenient operation and maintenance, etc. The sintering resistance furnace is used for hot-pressed ceramic blades and other high temperature sintering parts.

Description

Extraction type sintering electric furnace

The utility model belongs to industrial furnace, specifically a kind of back-heating type continuous high temperature hot pressed sintering resistance furnace.

The present continuous high temperature hot pressed sintering resistance furnace that generally adopts, be generally through, the mold heated, pressure heat-preserving, cooling that material is housed one logical indoor, stove heats up slow, thermal loss is big, waste heat can not reclaim, cooling velocity is slow, influences the hot pressing quality.The carbon pipe range and the diameter of heating element heater adapted are big in the stove, and the cost height is fragile, the maintain and replace inconvenience.

The purpose of this utility model is, provide a kind of be used for hot pressed ceramics blade and high-sintered parts, can recovery waste heat, can cool off economize on electricity, water saving, solar term after the hot pressing rapidly, production efficiency height, operating maintenance be back-heating type continuous high temperature hot pressed sintering resistance furnace easily.

Of the present utility model being characterised in that, the regenerative chamber inner bottom part is provided with revolvable rotating disk, uniform even number station on the same circumference of rotating disk; Have and pass push rod and the push-down head that the end of same diameter two stations and regenerative chamber can move up and down on the rotating disk; All place the regenerative chamber to cover with the cup of push rod coaxial line with the hot pressing chamber of push-down head coaxial line; Seaming chuck passes the axis insertion hot pressing chamber of hot pressing chamber cap along the hot pressing chamber, and its lower end is fixedly connected with the double acting piece; At the indoor heating that is provided with the control of inversion type carbon of hot pressing, electrode is drawn from hot pressing chamber upper portion side wall; Be provided with gate and supporting plate between cup and the regenerative chamber; Explosion-proof hold down gag places cup to cover.

Compared with the prior art the utility model has and can realize recovery waste heat, and the hot-die after the hot pressing cools off rapidly, economize on electricity, water saving, solar term, production efficiency height, advantages such as operating maintenance convenience.

Accompanying drawing is the structural representation of back-heating type continuous high temperature hot pressed sintering resistance furnace.

1 is electrode among the figure, and 2 is heating, and 3 are the double acting piece, 4 is seaming chuck, and 5 are the hot pressing chamber cap, and 6 is furnace lining, 7 are the hot pressing chamber, and 8 is the regenerative chamber, and 9 is explosion-proof hold down gag, 10 is preceding chamber cap, and 11 is supporting plate, and 12 is gate, 13 is cup, and 14 is push rod, and 15 is rotating disk, 16 is push-down head, and 17 is mould, and 18 is the backheat chamber cap.

Accompanying drawing has been described a kind of embodiment of the present utility model.The regenerative chamber inner bottom part is provided with revolvable rotating disk, uniform six stations on the same circumference of rotating disk; Have and pass push rod and the push-down head that the end of same diameter two stations and regenerative chamber can move up and down on the rotating disk; All place the regenerative chamber to cover with the cup of push rod coaxial line with the hot pressing chamber of push-down head coaxial line; Seaming chuck passes the axis insertion hot pressing chamber of hot pressing chamber cap along the hot pressing chamber, and its lower end is fixedly connected with the double acting piece made from high strength graphite; At the indoor heating that is provided with the control of inversion type carbon of hot pressing, electrode is drawn from hot pressing chamber upper portion side wall; Be provided with gate and supporting plate between cup and the regenerative chamber; Explosion-proof hold down gag places cup to cover.

The course of work of the present utility model is:

Stove need feed protective atmosphere when using.At first feed protection gas when starting working and carry out exhaust, can heat up when determining on inspection to be full of protective atmosphere in the stove, treat that furnace temperature rises to the charging mould of packing into after the operating temperature and begins hot pressing production.When six stations on the rotating disk were all placed a charging mould, stove enters following normal circulation duty: 60 ° of dial rotation, push-down head rose, and corresponding station mold is delivered to the indoor heating of hot pressing.Push rod rising is simultaneously delivered to cup with the mould on the corresponding station, inserts supporting plate, and push rod descends, the further cooling before closed shutter, this mould are come out of the stove in cup.When the indoor mold heated of hot pressing during to hot pressing temperature, seaming chuck and push-down head are implemented to enter the heat-insulation pressure keeping stage after the pressurization to mould simultaneously.After mold cooling time in the cup arrived, chamber cap took out the charging mould that reinstalls a needs heating with this mould before opening, and builds preceding chamber cap.The push rod that opens the sluices after the cup ventilation rises mould is held up, and supporting plate is drawn back, and general who has surrendered's mould is put on the corresponding station to the rotating disk under the push rod.The general who has surrendered places corresponding station through the mould of heat-insulation pressure keeping under the push-down head simultaneously.Rotating disk is rotated further 60 ° again, and this hot-pressed sintering furnace continues to repeat the above-mentioned course of work, has realized continuous hot-press production.

In sintering process, just carry out heat exchange in the hot-die coexistence regenerative chamber that cold mould of putting into that needs preheating and process heat-insulation pressure keeping need cool off, be that cold mould is preheated, hot-die is cooled, realized that hot-die speed is cold, both improve the hot pressing quality, and made waste heat recovery recycling again, reached purpose of energy saving.

When mould was in the heating pressurized state, the passage between hot pressing chamber and time khiva was pressed down head and blocks, and when general who has surrendered's mould moved to the regenerative chamber under the push-down head, this passage was sealed by the double acting piece, can reduce hot pressing chamber heat downward radiation; Cup and regenerative chamber have gate to be separated by, and can reduce the consumption that regenerative chamber hot gas rises and protects gas.

The available high strength graphite manufacturing of double acting piece.

Claims

1, back-heating type continuous high temperature hot pressed sintering resistance furnace, have hot pressing chamber [7], regenerative chamber [8], cup [13], gate [12], seaming chuck [4], push-down head [16], heating element heater [2], this reality is novel to be characterised in that, regenerative chamber [8] inner bottom part is provided with revolvable rotating disk [15], uniform even number station on the same circumference of rotating disk [15]; Have and pass rotating disk [15] and go up push rod [14] and the push-down head [16] that the end of same diameter two stations and regenerative chamber [8] can move up and down; All place on the backheat chamber cap [18] with the cup [13] of push rod [14] coaxial line with the hot pressing chamber [7] of push-down head [16] coaxial line; Seaming chuck [4] passes the axis insertion hot pressing chamber [7] of hot pressing chamber cap along hot pressing chamber [7], and its lower end is fixedly connected with double acting piece [3]; Be provided with the heating [2] of inversion type carbon control in hot pressing chamber [7], electrode [1] is drawn from hot pressing chamber [7] upper portion side wall; Be provided with gate [12] and supporting plate [11] between cup [13] and regenerative chamber [8]; Explosion-proof hold down gag places on the preceding chamber cap [10].

2, by the described continuous high temperature hot pressed sintering of claim 1 resistance furnace, it is characterized in that double acting piece ［ 3 ］ is made with high strength graphite.