Integrated ventilation partition plate and tempering system

Abstract

The utility model belongs to the technical field of steel plate tempering process, and particularly relates to an integrated ventilation partition plate and a tempering system.The integrated ventilation partition plate is of an integrated structure, the upper surface and the lower surface of the integrated ventilation partition plate are parallel to each other, the integrated ventilation partition plate can be rapidly placed on a steel plate through hoisting, and stacking tempering of the steel plate is achieved; the vertical supporting strips and the multiple transverse supporting strips which are arranged at intervals play a role in supporting the steel plates, meanwhile, the heat exchange space between the adjacent steel plates is guaranteed, the tempering efficiency of the steel plates is improved, and meanwhile the temperature uniformity of all the positions of the steel plates in the tempering process is guaranteed; and deformation and non-uniform tissue distribution caused by non-uniform heating are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel plate tempering process technical field, it is a kind of integrated ventilation baffle and tempering system. BACKGROUND

[0002] Tempering is the heat treatment process that workpiece is heated to Ac1 (the beginning temperature of pearlite to austenite transformation when heating) below certain temperature, keeps warm for a certain time, then cools to room temperature.Tempering can be divided into low-temperature tempering (150-250 DEG C), medium-temperature tempering (350-500 DEG C) and high-temperature tempering (500-650 DEG C above) according to tempering temperature range.When tempering production, heating temperature is lower, to ensure that the performance of steel plate is qualified, longer heating time in furnace is needed, thereby causing that tempering production efficiency is lower.

[0003] In early stage, Laiwu Steel wide plate heat treatment line completed 20mm thickness below steel plate stacking tempering production mode research and development, and steel plate performance is good.But when carrying out 30-60mm thickness high-strength steel stacking trial production according to this thought, the performance qualified rate of steel plate after tempering is lower, and the reasons are as follows:

[0004] 1, to improve production efficiency, the time in furnace of two steel plates after stacking is set to 1.5 times of single steel plate, since two steel plates can only be heated on one side, the uniformity of steel plate cross-section temperature is poor, leading to unstable performance.

[0005] 2, set the time in furnace of stacked steel plate to 2 times of single steel plate, and the performance stability is improved, but the production efficiency is improved by less than 5%, and the efficiency improvement effect is not obvious.

[0006] Chinese patent document CN220926864U (202322580529.2) discloses a pad iron assembly and pad iron trolley assembly, and plate can be placed on heating surface or plate support end or support, multiple plates of different heights can be placed in height direction, space utilization rate in furnace is effectively improved, gas circulation is enhanced, and tempering efficiency for steel plate is improved, but adjacent steel plates on trolley can only be placed side by side, the size of steel plate is limited, and the steel plate cannot be applied to larger size steel plate. UTILITY MODEL CONTENTS

[0007] The utility model discloses a kind of integrated ventilation baffle and tempering system, the utility model uses integrated ventilation baffle to separate two steel plates, ensure that the surface of two steel plates adjacent is heated evenly, and since integrated ventilation baffle is integrated structure, the flatness of each place on the upper and lower surfaces of integrated ventilation baffle is same, therefore, effectively ensure that steel plate is heated evenly in tempering process, avoid that steel plate is deformed or caused to be out of specification due to local uneven heating, and the size of each layer of steel plate above and below only needs to meet the space requirement of tempering furnace, can meet the tempering requirement of larger size steel plate.

[0008] The utility model discloses a technical problem that is to be solved adopts following technical scheme to realize: a integral type ventilation baffle, for annealing furnace, including a vertical support strip along the length direction of annealing furnace and multiple horizontal support strips along the width direction of annealing furnace, the horizontal support strip is mutually spaced along the length direction of annealing furnace.

[0009] The utility model discloses preferably, the horizontal support strip distribution is at the both sides of vertical support strip, thereby has better support effect to steel sheet.

[0010] The utility model discloses preferably, the horizontal support strip symmetry sets up at the both sides of vertical support strip. Because annealing furnace is usually provided with heating filament, flame gun and other heating device on the side wall along the length direction, sets up the horizontal support strip symmetry at the both sides of vertical support strip, can guarantee the temperature field of the both sides of vertical support strip, realizes the even support and even heating of steel sheet, avoids the deformation and organization performance unstable of the temperature uneven of steel sheet.

[0011] The utility model discloses preferably, the vertical support strip and / or horizontal support strip is provided with ventilation hole. Through setting up ventilation hole on the vertical support strip and / or horizontal support strip, strengthens the convection of the both sides gas of vertical support strip or horizontal support strip, helps to improve the annealing heating efficiency of steel sheet.

[0012] The utility model discloses preferably, the integral type ventilation baffle is Wang character shape or Gong character type.

[0013] The utility model discloses preferably, the thickness of integral type ventilation baffle is 40-50mm, to guarantee the ventilation volume between two steel sheets, guarantees the heating speed of the upper and lower surfaces of steel sheet.

[0014] The utility model discloses preferably, the integral type ventilation baffle is the whole piece steel sheet cutting and is formed or is integrally die-cast by mould. Directly utilize the whole piece steel sheet cutting or integrally die-cast preparation integral type ventilation baffle, effectively guarantees the consistency of the flatness of the upper and lower surfaces of integral type ventilation baffle.

[0015] The utility model discloses preferably, the width of vertical support strip and horizontal support strip is at least 150mm, to guarantee the support effect and the homogeneity of heat conduction.

[0016] The utility model discloses still discloses a kind of annealing systems, utilize above-mentioned integral type ventilation baffle, including roller way and steel sheet, the steel sheet and integral type ventilation baffle are alternately stacked from below to above on roller way;

[0017] The tempering furnace is arranged above a roller way.

[0018] Preferably, the integrated ventilation partition is made of the same material as the steel plate.

[0019] Compared with the prior art, the integrated ventilation partition is of an integrated structure and has parallel upper and lower surfaces, and can be quickly placed on the steel plate through hoisting, thereby improving the laying efficiency and achieving the stacking tempering of the steel plate.

[0020] The vertical support bars and the multiple horizontal support bars arranged at intervals with each other support the steel plate and ensure the heat exchange space between the adjacent two steel plates, which helps to improve the tempering efficiency of the steel plate and ensure the temperature uniformity of the steel plate during the tempering process, thereby avoiding the deformation and uneven distribution of the organization caused by the uneven heating. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 FIG. 1 is a structural schematic view of the integrated ventilation partition according to Embodiment 1 of the present application;

[0022] Figure 2 FIG. 2 is a structural schematic view of the integrated ventilation partition according to Embodiment 2 of the present application;

[0023] Figure 3 FIG. 3 is a structural schematic view of the integrated ventilation partition according to Embodiment 3 of the present application;

[0024] Figure 4 FIG. 4 is a structural schematic view of the tempering system according to the present application;

[0025] In the figure, 100 is a tempering furnace, 200 is a vertical support bar, 300 is a horizontal support bar, 400 is a ventilation hole, 500 is a roller way, and 600 is a steel plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings.

[0027] Embodiment 1

[0028] As Figure 1As shown in the figure, an integrated ventilation partition is used for a tempering furnace 100. The side wall of the tempering furnace 100 along the length direction is provided with a heating device, which includes a vertical support bar 200 arranged along the length direction of the tempering furnace 100 and multiple horizontal support bars 300 arranged along the width direction of the tempering furnace 100. The horizontal support bars 300 are arranged at intervals along the length direction of the tempering furnace 100. The horizontal support bars 300 are distributed on both sides of the vertical support bar 200.

[0029] The horizontal support bars 300 are symmetrically arranged on both sides of the vertical support bar 200.

[0030] The integrated ventilation partition is in the shape of a king character.

[0031] The thickness of the integrated ventilation partition is 40 - 50 mm. To ensure the support effect, the width of the vertical support bar 200 and the horizontal support bars 300 is at least 150 mm.

[0032] The integrated ventilation partition is cut from a whole steel plate or integrally die-cast by a mold. After cutting the steel plate, deburring treatment is carried out. For the integrated ventilation partition 4 formed by die-casting with a mold, surface grinding and processing can be carried out according to the flatness requirements.

[0033] As Figure 4 As shown in the figure, a tempering system uses the above integrated ventilation partition, which includes a roller track 500 and a steel plate 600. The steel plate 600 and the integrated ventilation partition are alternately stacked on the roller track 500 from bottom to top. The integrated ventilation partition can also be placed on a trolley, and the steel plate 600 and the integrated ventilation partition are alternately stacked together and sent into the trolley heat treatment furnace for heat treatment. Or place the steel plate 600 above the existing support pads, and then place the integrated ventilation partition and the steel plate 600 in sequence.

[0034] The tempering furnace 100 is arranged above the roller track 500. In this embodiment, an electromagnetic lifting device is used to lift the integrated ventilation partition and the steel plate 600.

[0035] The integrated ventilation partition is made of the same material as the steel plate 600.

[0036] Using the integrated ventilation partition of the present utility model not only improves the production efficiency of steel plate tempering but also improves the performance qualification rate. When a single steel plate is loaded into the furnace for production, the maximum single-furnace output is 230 tons / shift. When the tempering system uses the integrated ventilation partition of the present utility model for stacked production, the maximum single-furnace output is up to 298 tons / shift, and the production efficiency is increased by about 29.6%. Moreover, compared with the split pad structure, the loading efficiency of the integrated ventilation partition of the present utility model is greatly improved. At the same time, when cooling out of the furnace, it can quickly separate the upper and lower steel plates and the integrated ventilation partition, ensuring uniform cooling of the steel plate everywhere.

[0037] Because the flatness of the integrated ventilation partition plate is the same everywhere, the integrated ventilation partition plate and the steel plate are closely attached to each other, the integrated ventilation partition plate has the same heat conduction efficiency everywhere, the flatness of the steel plate after tempering heating is effectively ensured, and the uniformity of the temperature and the stability of the performance of the steel plate everywhere are ensured, and the qualified rate of the high-strength steel performance is increased from 97.33% to 98.28%.

[0038] Example 2

[0039] As shown in Figure 2 , the difference from example 1 is that the integrated ventilation partition plate 4 is an I-shaped type.

[0040] Example 3

[0041] As shown in Figure 3 , the difference from example 1 is that the vertical support bars 200 and / or the horizontal support bars 300 are provided with air holes 400. Because the tempering furnace 100 is usually provided with heat devices such as flame guns or radiation pipes on the side wall, by providing the vertical support bars 200 and / or the horizontal support bars 300 with air holes 400, the air flow on both sides of the vertical support bars 200 or the horizontal support bars 300 is exchanged with each other, and the steel plate is heated more uniformly and efficiently.

Claims

1. An integrated vent panel for a tempering furnace (100), characterized in that: The vertical support strip (200) is arranged along the length direction of the tempering furnace (100), and the horizontal support strips (300) are arranged along the width direction of the tempering furnace (100) and are spaced apart along the length direction of the tempering furnace (100).

2. The integrated vent panel of claim 1, wherein: The horizontal support strips (300) are arranged on both sides of the vertical support strip (200).

3. The integrated vent panel of claim 1 or 2, wherein: The horizontal support strips (300) are symmetrically arranged on both sides of the vertical support strip (200).

4. The unitary vent panel of claim 1, wherein: The vertical support strip (200) and / or the horizontal support strip (300) are provided with air holes (400).

5. The unitary vent panel of claim 1, wherein: The integrated ventilation partition is in the shape of a W or an I.

6. The integrated vent panel of claim 1, wherein: The thickness of the integrated ventilation partition is 40-50 mm.

7. The integrated vent panel of claim 1, wherein: The integrated ventilation partition is cut from a whole steel plate or integrally pressure-cast by a mold.

8. The unitary vent panel of claim 1, wherein: The width of the vertical support strip (200) and the horizontal support strip (300) is at least 150 mm.

9. A tempering system using the integrated vent panel of any one of claims 1 to 8, characterized in that: The roller table (500) and the steel plate (600) are arranged on the roller table (500) in an alternating manner from bottom to top. The tempering furnace (100) is arranged above the roller table (500).

10. The tempering system of claim 9, wherein: The integrated ventilation partition is made of the same material as the steel plate (600).

Images