Tempering furnace device for seamless steel pipe

Abstract

A tempering furnace device for seamless steel pipes comprises a tempering furnace, a furnace door opening is formed in the tempering furnace, a vertical rail is arranged on the edge of the furnace door opening, a furnace door is arranged on the vertical rail in a sliding mode, a baffle is fixed to the inner side of the lower portion of the furnace door opening, an entering through hole is formed in the baffle, and the through hole is aligned with an upstream roller way. The diameter of the through hole is larger than that of the steel pipe with the largest size. And the baffle is welded on the tempering furnace. Compared with the prior art, the tempering furnace has the technical effects that the baffle is arranged, so that air can be prevented from entering the tempering furnace when a steel pipe enters the furnace, and the oxidation amount of the steel pipe in the tempering furnace is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of rolling seamless steel pipe, specifically relates to a tempering furnace device for seamless steel pipe. BACKGROUND

[0002] After the solid billet is rolled (hot-rolled) into a seamless steel pipe, the steel pipe needs to be heat treated in a tempering furnace.

[0003] For example, Figure 1 A furnace door hole 11 is arranged on the tempering furnace 10, a vertical track 12 is arranged at the edge of the furnace door hole 11, a furnace door 13 is slidably arranged on the vertical track 12, when the steel pipe 90 needs to enter the furnace, the furnace door 13 is slid upward, the lower part of the furnace door hole 11 is exposed to form a passage, the steel pipe 90 can enter the furnace, finally, the furnace door 13 is slid downward, the furnace door hole 11 is sealed, and the steel pipe can be heat treated in the tempering furnace.

[0004] The technical problem is that the length of the steel pipe 90 is relatively long, the time for the lower part of the furnace door hole 11 to be exposed to form a passage is also relatively long, the amount of oxygen in the air entering the tempering furnace 10 is large, and the steel pipe 90 is seriously oxidized in the tempering furnace 10. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem of how to design a tempering furnace device for a seamless steel pipe to reduce the oxidation amount of the steel pipe 90 in the tempering furnace 10.

[0006] The technical scheme of the utility model is specifically as follows:

[0007] A tempering furnace device for a seamless steel pipe, comprising a tempering furnace, a furnace door hole is arranged on the tempering furnace, a vertical track is arranged at the edge of the furnace door hole, a furnace door is slidably arranged on the vertical track, a baffle is fixedly arranged on the inner side of the lower part of the furnace door hole, an entering through hole is arranged on the baffle, and the through hole is aligned with the upstream roller way.

[0008] The diameter of the through hole is greater than the diameter of the largest type of steel pipe.

[0009] The baffle is welded on the tempering furnace.

[0010] Compared with the prior art, the utility model has the technical effect that the baffle is arranged, air can be blocked from entering the tempering furnace when the steel pipe enters the furnace, and the oxidation amount of the steel pipe in the tempering furnace is reduced. DRAWING DESCRIPTION

[0011] Figure 1 It is a schematic view of the prior art.

[0012] Figure 2 It is a top view schematic view of the utility model.

[0013] Figure 3It is the use state's schematic diagram of the utility model. DETAILED DESCRIPTION

[0014] The utility model is described in detail below in combination with the drawings and its specific embodiment.

[0015] As Figure 2 A tempering furnace device for seamless steel pipe, comprising a tempering furnace 10, the tempering furnace 10 is equipped with a furnace door hole 11, the edge of the furnace door hole 11 is equipped with a vertical rail 12, the furnace door 13 is slidably arranged on the vertical rail 12, when the steel pipe 90 needs to enter the furnace, the furnace door 13 slides upward, the lower part of the furnace door hole 11 is exposed to become a passageway, the steel pipe 90 can enter the furnace, finally, the furnace door 13 slides downward, the furnace door hole 11 is sealed, and the steel pipe can be heat treated in the tempering furnace.

[0016] The baffle 20 is fixed in the lower inner side of the furnace door hole 11, the baffle 20 is equipped with an entering through hole 21, and the through hole 21 is aligned with the upstream roller way.

[0017] For the convenience, the diameter of the through hole 21 is greater than the diameter of the largest model steel pipe 90.

[0018] For the firmness, the baffle 20 is welded on the tempering furnace 10.

[0019] Its working principle is:

[0020] As Figures 2-3 When the steel pipe 90 needs to enter the furnace, the furnace door 13 slides upward, the entering through hole 21 of the baffle 20 is exposed, the steel pipe 90 can enter the furnace from the entering through hole 21, finally, the furnace door 13 slides downward, the furnace door hole 11 is sealed, and the steel pipe can be heat treated in the tempering furnace.

[0021] When the furnace door 13 slides upward, the baffle 20 blocks the exposure of most of the furnace door hole 11, can block the air from entering the tempering furnace, and reduces the oxidation amount of the steel pipe in the tempering furnace.

[0022] Other contents refer to the prior art.

[0023] The above is only the preferred embodiment of the utility model, and it should be pointed out that for those skilled in the art, without departing from the overall concept of the utility model, a number of changes and improvements can be made, which should also be regarded as the protection range of the utility model.

Claims

1. A tempering furnace device for seamless steel pipes, comprising a tempering furnace (10) provided with a furnace door hole (11), the edge of the furnace door hole (11) is provided with a vertical track (12), and a furnace door (13) is slidingly arranged on the vertical track (12), characterized in that: A baffle (20) is fixed to the lower inner side of the furnace door hole (11), and an entry through hole (21) is provided in the baffle (20) and is aligned with the upstream roller table.

2. The tempering furnace apparatus for seamless steel pipes as recited in claim 1, characterized by: The diameter of the through hole (21) is greater than the diameter of the largest model of steel pipe (90).

3. The tempering furnace apparatus for seamless steel pipes as recited in claim 2, characterized by: The baffle (20) is welded to the tempering furnace (10).

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