CN202613966U

CN202613966U - Furnace hearth structure

Info

Publication number: CN202613966U
Application number: CN 201220122340
Authority: CN
Inventors: 秦文隆
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-28
Filing date: 2012-03-28
Publication date: 2012-12-19
Anticipated expiration: 2022-03-28

Abstract

The utility model relates to a furnace hearth structure, in particular to a novel design of an inner conveying rail furnace hearth structure for a push plate type continuous atmosphere sintering furnace. According to the furnace hearth structure, side rails are arranged at opposite positions on two sides of a rail supporting seat of the push plate type continuous atmosphere sintering furnace; a plurality of bottom rails are arranged on the rail supporting seat on the inner sides of the two side rails; a push plate traveling rail is arranged between the side rails and the bottom rails; and the side rails and the bottom rails are provided with hollow parts, so that the expansion coefficient is reduced, the deformation is avoided, the effects of preventing the push plate from tilting and reducing the temperature gradient to achieve uniform temperature are achieved, the rails can be made of silicon carbide, and high thermal conductivity, heat resistance and lubrication degree can be obtained. The bottom rails are strip-type and are arranged in a staggered mode, and adjacent bottom rails are prevented from being connected at the same position, so that the push plate smoothly travels, and the push plate can be prevented from being clamped in the furnace.

Description

Hearth structure

Technical field

The utility model belongs to continous way atmosphere sintering furnace technical field, particularly to the brand-new design of the interior feed track hearth structure of the continuous atmosphere sintering furnace of push-plate type, has and avoids track deformation, avoids the push pedal plate to stick up and reduce thermograde and reach the effect of samming.

Background technology

Press; In the preparation technology of electronic component or powdered metallurgical material; Need to import different atmosphere gas sintering or heat treatment in kiln, sintering or heat treatment are a considerable technology, the quality of electronic component or powdered metallurgical material product quality because sintering or Technology for Heating Processing concern.The utility model inventor had before reached the requirement of sintering atmosphere in the stove of keeping under strict control with the continous way atmosphere sintering furnace, like No. 097204412 " continuous vacuum atmosphere sintering furnace ", No. 093216847 " the continuous atmosphere sintering furnace of push-plate type " ... Deng.With No. 093216847 patent is example, and this patent mainly is made up of body of heater, interior feed track, outer feed track and exchange system, and feed track is located at body of heater inside in this; And linking the exchange system of being located at body of heater two sides, outer feed track is located at the body of heater outside, and links the exchange system of body of heater two sides; With the delivery platform as storing electronic component carrier to be sintered, this body of heater is a closed, and importing is protected or atmosphere gas is used in reaction; And according to the technology differentiation intensification sintering stage and cooling section are arranged, have heat-resisting material in the intensification sintering stage and look the temperature required heating element heater of sintering program, cooling section has cooling device; This exchange system of being located at body of heater two sides respectively has two road gas-tight doors, and forms a switch room, before carrier is sent to body of heater; Two road gas-tight doors of body of heater head end are sealing; Treat to vacuumize in the switch room and import atmosphere gas to body of heater in behind the identical atmosphere, the inboard gas-tight door side of stove opens carrier is pushed in the body of heater, before carrier will be seen body of heater off; Two road gas-tight doors of body of heater tail end are sealing; And vacuumized in the switch room and imported atmosphere gas to body of heater in identical atmosphere, the inboard gas-tight door side of stove opens carrier is pushed in the switch room, has and avoids sneaking in the body of heater effect that the stove outer air improves sintering heat treatment qualities such as electronic component.The continuous atmosphere sintering furnace of case push-plate type before only being somebody's turn to do sticks up disappearance for avoiding plate, and its length is restricted can not be oversize.Again, see also shown in Figure 1ly, this supplies the siege B of push pedal A operation; The bulk arrangement of processing tool recess C with refractory material forms; Because the restriction of technology, the size of each Refractory blocks is restricted, and because be that solid Refractory blocks constitutes; Siege is prone to have some setbacks because of the variation of expanding causes the generation push pedal that it carried operation, even raised plate is stuck up the card stove.Moreover, owing in the sintering Technology for Heating Processing of products such as electronic component powder metallurgy powder body material,, must strengthen and hold body and pick up speed for increasing production capacity efficient.But if hold body highly to increase, can receive the influence of stability risk, institute thinks increases production capacity efficient; The body of heater of can only widening and extend in order to make the heat treated thermograde of sintering average, and has adopted upper and lower mode of heating; Promptly put heating element heater D in the upper and lower end of heat treatment material to be sintered; Prior art is because push pedal places on the solid siege, and the high temperature that following heater produces need can arrive material to be sintered place through solid siege transmission, and this promptly produces the uneven disappearance of upper and lower thermograde; Have a strong impact on the sintering quality, be its disappearance.This is prior art and has maximum disappearance, and this disappearance is into the difficult problem that industry is demanded urgently overcoming.

The utility model content

In order to solve the problems of the technologies described above; The utility model provides a kind of " hearth structure "; Particularly to the brand-new design of interior feed track hearth structure of the continuous atmosphere sintering furnace of push-plate type, it mainly is provided with siding track to the utility model on the rail supported seat two side relative positions of the continuous atmosphere sintering furnace of push-plate type, establishes several end rail on the rail supported seat of two siding tracks inboard; Has the track that recess is advanced as push pedal between siding track and end rail; And said siding track and end rail have hollow bulb, avoid distortion to reduce the coefficient of expansion, have to avoid the push pedal plate to stick up and reduce thermograde and reach the effect of samming.

Preferably, this end rail and siding track are strip.

As optimal technical scheme, between end rail and siding track that this is adjacent, the setting of staggering of the cohesive position of end rail and end rail and siding track and siding track is not at same position.

As optimal technical scheme, between end rail and end rail that this is adjacent, the setting of staggering of the cohesive position of its each end rail is not at same position.

As optimal technical scheme, has the gap between each end rail.

Preferably, this siding track is that carborundum constitutes, and can get preferable heat conduction, heat-resisting and lubricity.

Preferably, this end rail is that carborundum constitutes, and can get preferable heat conduction, heat-resisting and lubricity.

Rail of the aforementioned end of the utility model is strip and is crisscross arranged, and avoids rail of the adjacent end to be connected in same position, and it is more smooth and easy that push pedal is advanced, and can avoid push pedal card stove.

Have the gap between rail of the aforementioned end of the utility model, following heater can be reached the effect that reduces thermograde and reach samming through the gap directly to the push pedal heating.

Description of drawings

Fig. 1 is that existing continous way pusher furnace is analysed and observe and top view.

Fig. 2 is the utility model embodiment cutaway view.

Fig. 3 is the circled partial enlarged drawing of Fig. 2.

[main element symbol description]

A, push pedal; B, siege;

C, recess; D, heating element heater;

1, rail supported seat;

2, siding track;

20, hollow bulb;

3, end rail;

30, hollow bulb;

4, recess;

5, push pedal;

6, following heater;

8, gap;

9, joining place.

The specific embodiment

Below in conjunction with accompanying drawing and specific embodiment the utility model is described further so that those skilled in the art can better understand the utility model and implementing, but the embodiment that lifts not conduct to the qualification of the utility model.

The utility model particularly is directed against the brand-new design of interior feed track hearth structure of the continuous atmosphere sintering furnace of push-plate type; See also Fig. 2, shown in 3, but mainly establish several end rail 3 by figure knowledge capital utility model in being provided with on the rail supported seat 1 two side relative positions of the continuous atmosphere sintering furnace of push-plate type on the inboard rail supported seat 1 of siding track 2, two siding tracks 2; 3 on siding track 2 and end rail have recess 4; Constitute the track that push pedal 5 is advanced, aforementioned siding track 2 and end rail 3 have hollow bulb 20,30, borrow the design of siding track 2 and end rail 3 hollow bulbs 20,30; Can reduce the coefficient of expansion of siding track 2 and end rail 3; And then avoid 3 distortion of siding track 2 and end rail, and bottom heating element heater 6 when design that can be through hollow bulb 20,30 to the element heating to be sintered in the push pedal 5, so when can effectively avoiding push pedal 5 plates to stick up and reducing thermograde and reach the effect of samming.

Aforementioned siding track 2 of the utility model and end rail 3, its material can be selected carborundum SiC for use, can obtain preferable thermal conductivity, hear resistance and lubricity.

See also Fig. 2, shown in 3; Rail 3 of the aforementioned end of the utility model and siding track 2 are strip, and are connected setting for interlocking [rail 3 of the adjacent end or siding track 2 are avoided being connected at same joining place 9, and forming interlocks is connected]; And because the length that on technology, can make is bigger; Joining place 9 is reduced, so more smooth and easy when push pedal 5 is advanced, and can avoid push pedal 5 card stoves.

See also shown in Figure 3ly, 3 on rail of the aforementioned end of the utility model has gap 8, and following heater 6 can be through gap 8 directly to the element heating to be sintered in the push pedal 5, so when reaching the effect that reduces thermograde and reach samming.

The above embodiment is the preferred embodiment that proves absolutely that the utility model is lifted, and the protection domain of the utility model is not limited thereto.Being equal to that the technical staff in present technique field is done on the utility model basis substitutes or conversion, all within the protection domain of the utility model.The protection domain of the utility model is as the criterion with claims.

Claims

1. hearth structure; It is characterized in that; Mainly on the rail supported seat two side relative positions of the continuous atmosphere sintering furnace of push-plate type, siding track is set; Establish several end rail on the inboard rail supported seat of two siding tracks, have the track that recess is advanced as push pedal between siding track and end rail, and said siding track and end rail have hollow bulb.

2. hearth structure as claimed in claim 1 is characterized in that, this end rail and siding track are strip.

3. hearth structure as claimed in claim 2 is characterized in that, between end rail and siding track that this is adjacent, and the setting of staggering of the cohesive position of end rail and end rail and siding track and siding track.

4. hearth structure as claimed in claim 2 is characterized in that, between end rail and end rail that this is adjacent, and the setting of staggering of the cohesive position of its each end rail.

5. hearth structure as claimed in claim 1 is characterized in that, has the gap between each end rail.

6. hearth structure as claimed in claim 1 is characterized in that, this siding track is that carborundum constitutes.

7. hearth structure as claimed in claim 1 is characterized in that, this end rail is that carborundum constitutes.