CN201992999U

CN201992999U - Charging rack used for bogie hearth furnaces

Info

Publication number: CN201992999U
Application number: CN2011200170748U
Authority: CN
Inventors: 王朋; 梁春魁; 徐文利
Original assignee: Beris Engineering and Research Corp
Current assignee: Beris Engineering and Research Corp
Priority date: 2011-01-14
Filing date: 2011-01-14
Publication date: 2011-09-28
Anticipated expiration: 2021-01-14

Abstract

The utility model provides a charging rack used for bogie hearth furnaces, and is mainly applied to the steel pipe heat treatment technology in the steel industry. The charging rack comprises a lower layer low cement rack and an upper heat resistant steel rack, wherein the upper surface of the lower layer low cement rack is provided with a groove for disposing steel pipes with larger diameters; the bottom of the upper heat resistant steel rack is provided with projections in cooperation with the groove on the surface of the lower layer low cement rack; the lower layer low cement rack and the upper heat resistant steel rack are in mutual cooperation through the groove and the projections. The charging rack employing the technical scheme of the utility model solves the problem that steel pipes with different diameters have a complex charging process in a heat treatment process, raises the heat treatment precision of steel pipes of part specifications, and enlarges the steel pipe specification scope for heat treatment by the bogie hearth furnaces.

Description

A kind of skid bed that is used for car type furnace

Technical field

The utility model relates to a kind of skid bed that is used for car type furnace, relates in particular to a kind of skid bed that is used for steel pipe heat treatment car type furnace.

Background technology

The skid bed that tradition is used for steel pipe heat treatment car type furnace is the individual layer bin, owing to limit by car type furnace heat supply and smoke evacuation system arrangement, generally all there is temperature difference in the heating-up temperature of car type furnace on the furnace height direction, and the Technology for Heating Processing of steel pipe requires the inside and outside temperature difference of pipe the smaller the better, particularly when producing high-quality steel pipe or Steel Tube Special, higher to the requirement of the temperature difference.And in the heat treatment process of steel pipe, more satisfactory situation is to allow steel pipe heat-treat in effective heating region of car type furnace, but, because the skid bed that adopts is the individual layer bin at present, and the specification difference of the heat treated steel pipe of needs, diameter dimension with steel pipe is an example, has diameter bigger (D1) that diameter less (D2) is arranged.As shown in Figure 1, if the individual layer bin is made as bin based on diameter D1, make in heating process, diameter is second effective heating region that the steel pipe about D1 can major part be in car type furnace, and then obtain high-quality heat-treated steel, if still this individual layer bin is used for the less steel pipe that diameter is D2, then steel pipe is difficult to be positioned at the second available heat processing region, can only be positioned at first relatively poor effective processing region of temperature accuracy, therefore influence the quality of heat treatment steel pipe.

Based on the problems referred to above, how to design a kind of simple in structurely, can be applicable to the heat treated skid bed of different-diameter steel pipe again, become those skilled in the art's problem demanding prompt solution.

Summary of the invention

The utility model provides a kind of skid bed that is used for car type furnace, be mainly used in process for heat treatment of steel pipe, not only solved charging process complicated problems in the different-diameter steel pipe heat treatment process, and improved the heat treatment precision of part specification steel pipe, enlarged car type furnace can heat treatment steel pipe specification scope.

In order to address the above problem, the skid bed that the utility model is used for car type furnace has adopted following technical scheme, a kind of skid bed that is used for car type furnace, include low cement bin of lower floor and upper strata heat resisting steel bin, wherein, the low cement bin upper surface of lower floor has and is used to place the groove of diameter than big steel pipe; Heat resisting steel bin bottom surface, upper strata has the projection of hanging down the groove fit of cement bin upper surface with lower floor; Low cement bin of lower floor and upper strata heat resisting steel bin cooperatively interact by groove and projection.

Further, the groove of the low cement bin of described lower floor can be arc groove; The projection of described upper strata heat resisting steel bin can be arc convex; Low cement bin of lower floor and upper strata heat resisting steel bin cooperatively interact by arc groove and projection.

Described Type Car-bottom Heat Treating Furnace also includes chassis body, first effective thermal treatment zone and second effective thermal treatment zone, wherein second effective thermal treatment zone is that temperature accuracy is than higher heating region, first effective thermal treatment zone is positioned at around second effective thermal treatment zone, and its heat treatment temperature ratio of precision second effective thermal treatment zone is poor.

Further, described upper strata heat resisting steel bin combines removably with described lower floor low cement bin; And the low cement bin of lower floor is fixed in the chassis upper surface.

The low cement bin height H of described lower floor just makes major diameter D1 steel pipe fully place the described second available heat treatment region; And the low cement bin height H sum of described upper strata heat resisting steel bin height h and described lower floor just also fully places minor diameter D2 steel pipe the described second available heat treatment region.

After having adopted upward skid bed described in the utility model, not only guaranteed the heat treatment precision of large diameter steel pipe, also improved the heat treatment precision of minor-diameter steel-tube simultaneously, and then guaranteed the heat treatment quality of the steel pipe that diameter is different.

Description of drawings

Situation schematic diagram when Fig. 1 is used for the less steel pipe D2 of the bigger steel pipe D1 of heat treatment diameter and diameter for the conventional monolayers bin;

Situation schematic diagram when Fig. 2 heats for the utility model skid bed is used for the bigger steel pipe D1 of diameter;

Situation schematic diagram when Fig. 3 heats for the utility model skid bed is used for the less steel pipe D2 of diameter;

Fig. 4 is the upper strata heat resisting steel bin structural representation in the utility model specific embodiment;

Fig. 5 is the structural representation of the low cement bin of upper strata heat resisting steel bin and the lower floor in the utility model specific embodiment when combining.

The specific embodiment

In order better to understand the purpose of this utility model, feature and effect, below in conjunction with accompanying drawing a specific embodiment of the present utility model is made detailed explanation, be described as follows:

As shown in Figure 2, situation schematic diagram when being used for the bigger steel pipe D1 of diameter heating for the utility model skid bed, the described skid bed that is used for car type furnace of present embodiment, it includes low cement bin 3 of lower floor and upper strata heat resisting steel bin 4, and, the upper surface of the low cement bin 3 of described lower floor has the arc groove 31 that is used to place the bigger steel pipe D1 of diameter, and these arc groove 31 radiuses are R1; The lower surface of described upper strata heat resisting steel bin 4 has the arc-shaped convex 41 that matches with the arc groove 31 of lower floor low cement bin upper surface; The low cement bin 3 of lower floor cooperatively interacts by arc groove 31 and arc convex 41 with upper strata heat resisting steel bin 4.

As Fig. 3 and shown in Figure 5, described upper strata heat resisting steel bin 4 hangs down cement bin 3 with lower floor and combines removably, that is to say when needs use upper strata heat resisting steel bin 4, directly upper strata heat resisting steel bin 4 is placed on the low cement bin 3 of lower floor to get final product, the low cement bin 3 of lower floor engages by arc groove 31 and arc convex 41 mutually with upper strata heat resisting steel bin 4.

And cement bin 3 hangs down in the lower floor described in the present embodiment, adopts low cement pouring material prefabricated section to make, and adopts pouring material bin to be fixed in the upper surface of chassis body 5 around the bin.

As Fig. 2, shown in Figure 3, employed car type furnace in the present embodiment, include chassis body 5, first effective thermal treatment zone 1 and second effective thermal treatment zone 2, wherein second effective thermal treatment zone 2 is that temperature accuracy is than higher thermal treatment zone, first effective thermal treatment zone 1 is positioned at around second effective thermal treatment zone 2, and its heat treatment temperature ratio of precision second effective thermal treatment zone 2 is poor.

As Fig. 4, shown in Figure 5, the height of the low cement bin 3 of the lower floor in the present embodiment is H, during use, when needs are heat-treated large diameter steel pipe D1, only adopt lower floor to hang down cement bin 3, major diameter D1 steel pipe is positioned over to utilize waters in the groove 31 that material feeding is fixed on the low cement bin 3 of lower floor on the car type furnace, the height of the low cement bin of lower floor just can make major diameter D1 steel pipe farthest place second effective thermal treatment zone 2 to carry out sufficient heat treatment; When needs are heat-treated minor-diameter steel-tube D2, upper strata heat resisting steel bin 4 is placed on the low cement bin 3 of lower floor, engage with projection 41 by groove 31, the height of the low cement bin 31 of lower floor is h, the height that the low cement bin 3 of described lower floor adds upper strata heat resisting steel bin 4 just can make minor-diameter steel-tube D2 farthest place second effective thermal treatment zone 2, thereby makes minor diameter D2 steel also can obtain the higher heat treatment of precision.

Upper strata heat resisting steel bin 4 in the present embodiment can be the plane and also can be provided with the arc groove that is used for placing steel tubes, the size of groove is decided according to the diameter of placing steel tubes, for example in the present embodiment, the diameter of steel tube that upper strata heat resisting steel bin is placed is D2, then the radius of arc groove can be slightly larger than D2/2, so that steel pipe better is fixed in wherein.

After having adopted the described skid bed of the utility model specific embodiment, not only guaranteed the heat treatment precision of large diameter steel pipe, also improved the heat treatment precision of minor-diameter steel-tube simultaneously, and then guaranteed the heat treatment quality of different model steel.

It should be noted that; the above only is a specific embodiment of the present utility model, for a person skilled in the art, and under the prerequisite that does not break away from the utility model principle; can also make some modification and improvement, these also should be considered as belonging to protection domain of the present utility model.

Claims

1. a skid bed that is used for car type furnace is characterized in that, includes low cement bin (3) of lower floor and upper strata heat resisting steel bin (4), and described lower floor hangs down cement bin (3) upper surface and has and be used to place the groove (31) of diameter than big steel pipe (D1); Upper strata heat resisting steel bin (4) bottom surface has the projection (41) that cooperates with the groove (31) of lower floor low cement bin (3) upper surface; The low cement bin (3) of lower floor is corresponding with the shape of projection (41) by groove (31) with upper strata heat resisting steel bin (4).

2. the skid bed that is used for car type furnace as claimed in claim 1 is characterized in that, the groove (31) of the low cement bin of described lower floor is an arc groove; The projection (41) of described upper strata heat resisting steel bin is an arc convex.

3. the skid bed that is used for car type furnace as claimed in claim 1 is characterized in that, upper strata heat resisting steel bin (4) hangs down cement bin (3) with lower floor and links together in detachable mode.

4. the skid bed that is used for car type furnace as claimed in claim 1, it is characterized in that, described car type furnace includes chassis body (5), first effective thermal treatment zone (1) and second effective thermal treatment zone (2), first effective heating region (1) is positioned at effective heating region (2) on every side, and the temperature accuracy of second effective thermal treatment zone (2) is than the temperature accuracy height of first effective thermal treatment zone (1), and the low cement bin (3) of described lower floor is fixed in described chassis body (5) upper surface.

5. the skid bed that is used for car type furnace as claimed in claim 4 is characterized in that, the low cement bin (3) of described lower floor is built all around and is fixed in described chassis body (5) upper surface.