CN2516926Y

CN2516926Y - Muffle furnace

Info

Publication number: CN2516926Y
Application number: CN 02218219
Authority: CN
Inventors: 马清林
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-01-08
Filing date: 2002-01-08
Publication date: 2002-10-16
Anticipated expiration: 2012-01-08

Abstract

The utility model relates to a Muffle Can. Using cold-pressing technique, local bulging out of the top part and bottom part of the Muffle Can can be made. More than a reinforcement is formed on the top and bottom of the Muffle Can. The added reinforcement of the utility model not only can strengthen the intensity of the Muffle Can, but also can lessen the stress concentration of the Muffle Can due to the function when the Muffle Can is in the high temperature status, thus can prevent tension under high temperature due to heat expansion. The utility model has the advangtages that the utility model is not only energy-saving and gas-saving, but also can achieve a continuous application of two years in the temperature of 1150 degree, thus can greatly reduce the maintenance cost for the enterprise.

Description

A kind of Muffle pot

Technical field

The utility model relates to burner hearth---the Muffle pot in a kind of sintered metal product sintering electric furnace.

Background technology

Burner hearth---Muffle pot in the iron powder reducing sintering electric furnace that the metallurgical product structural member that makes powder is at present used, two kinds of segmented and monoblock types are arranged, segmented mainly contains following two kinds: a kind of is to be made by diamantane Tercod segmentation casting, because area is big, width reaches 560mm, length between 5600, thereby its bad mechanical strength, poor air-tightness, power consumption, take gas, service life short, generally keep in repair between the month frequently at 8-10.Another kind be the alloy cast steel horse not, also by segmentation casting, play the slope welding then, the many poor air-tightness of this Muffle pot sand holes, the furnace wall thickness is also inhomogeneous.

The integral cast horse of having used at present not, also because the many poor air-tightness of sand holes, furnace wall became uneven and be heated irregularly causes heat dissipation consumption gas.Simultaneously, because the manufacturing process imperfection is made the import that Muffle pot adopted of a 5-6 rice or the high temperature stainless steel plate of home made O Cr25Ni5, thickness also can only be between 6mm, and must again through the processing bending, be shaped and then play the slope welding in advance through shearing.Owing to be subjected to the relation that object expands with heat and contract with cold, this kind Muffle pot also can only use within 1000 ℃, and what the life-span was the shortest has only one month, even as in debug process, the weld cracking situation promptly takes place take place, good Muffle pot generally also surpasses only 10 months service life to play the slope welding.

Summary of the invention

The technical problems to be solved in the utility model be exactly existing Muffle pot weak point in service life, non-refractory, energy consumption big, keep in repair frequent problem.

For solving the problems of the technologies described above, the utility model adopts following technical scheme:

The employing technology of colding pressing is outwards protruded the top of Muffle pot and the local of bottom, the reinforcement at the Muffle pot top more than each forms with the bottom.

For large-sized Muffle pot, also can adopt the technology of colding pressing, the part of the both sides of Muffle pot is also outwards protruded, the reinforcement more than each forms together in both sides.

The reinforcement that the utility model increased, not only can increase the intensity of Muffle pot, and when Muffle pot is under the condition of high temperature expanded by heating, can alleviates Muffle pot and concentrate because of the stress that mechanism forms, avoid Muffle pot at high temperature to tear drawing crack because of expanded by heating.Continuous use can reach 2 years with for a long time when therefore the utility model was in 1150 ℃ for a long time, if serviceability temperature is within 1000 ℃, used continuously can guarantee fully in 3 years, like this, can be enterprise's economization maintenance cost greatly.Simultaneously, because the import sheet material that the utility model adopts, thickness is even, and the effect of energy-conservation province gas also is very tangible in intensification cooling, baker and production process.

Description of drawings

Fig. 1 is the structural representation of the utility model specific embodiment one.

Fig. 2 is the structural representation of the utility model specific embodiment two.

Fig. 3 is the structural representation of the utility model specific embodiment two.

The specific embodiment

As Fig. 1, Fig. 2 and shown in Figure 3, the utility model is by adopting whole upper and lower two parts to constitute, and upper and lower two parts all adopt thickness between 8-10mm and import wild ox board OCr25Ni5 that is 310S high temperature stainless steel sheet material, through 500T press cold-press moulding.Adopt between upper and lower two parts and beat sloping built-up welding mode and be welded as a whole.According to the length longitudinally of Muffle pot and horizontal width, just, when cold moudling, make that the top of utility model and bottom are local outwards protrudes, thereby to be circular-arc, internal diameter be that 25mm, external diameter are the beading 1 of 33mm to the cross section more than each forms with the bottom at top of the present utility model.For the large-sized Muffle pot of part, can adopt with quadrat method to make its left and right sides also form above beading 1.

Shown in Figure 1 is the utility model specific embodiment one, and a reinforcement 1 is respectively arranged at its top and bottom.

Shown in Figure 2 is the utility model specific embodiment two, and its top and bottom respectively have three to strengthen beading 1.

Shown in Figure 3 is the utility model specific embodiment three, and its top and bottom reach each side a reinforcement 1.

Claims

1, a kind of Muffle pot is characterized in that the local of its top and bottom outwards protrudes, the reinforcement more than the top respectively forms with the bottom.

2, Muffle pot as claimed in claim 1 is characterized in that the part of its both sides is also outwards protruded, the reinforcement more than each forms together in both sides.

3, Muffle pot as claimed in claim 1 or 2 is characterized in that the cross section of described reinforcement is circular-arc.