Support beam binding method capable of reducing dark marks of steel blanks
A technology of black stamping on billets and supporting beams, which is applied in the furnace type, furnace, lighting and heating equipment, etc., can solve the problems of difficulty in construction of the slope surface of the working layer on both sides of the heat-resistant pad, and the increase of the working layer, etc., to solve the problems of the billet. The effect of large collision impact, strength and integrity improvement
Active Publication Date: 2019-06-21
ANGANG STEEL CO LTD
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Problems solved by technology
[0009] In order to solve the problems described in the background technology, the present invention provides a support beam wrapping method that reduces black marks on steel billets. To solve the problem of increasing the temperature difference of billet black marks and the difficulty of construction on the slope surface of the working layer on both sides of the heat-resistant pad, a support beam wrapping method is provided, which can not only make the wrapping layer less affected by the collision of steel billets, but also reduce the temperature difference of billet black marks. The purpose of improving the heating quality
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[0039] 1) Weld the heat-resistant pads 2 staggeredly on the vertical water pipe 1 of the support beam. The support beam vertical water pipe 1 includes the longitudinal beam upper water pipe 11 and the longitudinal beam lower water pipe 12. The two thick-walled steel pipes are connected by welding through the support plate 13. The two thick-walled steel pipes are made of 20g thick-walled steel pipes. The diameter and wall thickness of the steel pipes are more than The billet load and strength requirements are determined as φ140mm×20mm; the heat-resistant pad 2 material, form size, etc. are determined by the heating system and billet load. The material is Co-50, the height is 110mm, the width is 40mm, and the length is 220mm. The welding method is that every two pieces are staggered Arrangement.
[0040] 2) Weld the anchor hook 3 on the water pipe 1 of the longitudinal beam of the supporting beam to ensure that the welding is firm. Two anchor hooks 3 with a length of 35 mm are ...
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The invention provides a support beam binding method capable of reducing dark marks of steel blanks. A support beam longitudinal beam water pipe comprises a longitudinal beam upper water pipe, a longitudinal beam lower water pipe and a support plate; staggered heat resisting cushion blocks are welded on the longitudinal beam upper water pipe; anchoring hooks are made of Cr25Ni20 materials, and areof Y-shaped structures; and high-thermal-insulation ultrathin insulation materials are formed by compressing TMT-MP10RHY nanofiber materials. A metal template is inwards inclined above the horizontalcenter line of the longitudinal beam upper water pipe to contact with the 1 / 2-3 / 5 height places of the vertical outer end surfaces of the heat resisting cushion blocks; and the template is outwards inclined by 45-55 degrees as an unloading port above the 1 / 2-3 / 5 height places of the vertical outer end surfaces of the heat resisting cushion blocks. The method solves the problems of influence on the service life due to collision of binding blocks by the steel blanks, increment of the dark mark temperature difference of the steel blanks due to working layers cast by an U-shaped mold and difficult construction of slope surfaces of working layers on two sides of the heat resisting cushion blocks in the prior art, can be lower in influence on the binding layers by collision with the steel blanks, can reduce the dark mark temperature difference of the steel blanks, and improves the heating quality.
Description
technical field [0001] The invention relates to the technical field of heat insulation and heat preservation of water pipes of support beams at the furnace bottom of a heating furnace, in particular to a support beam wrapping method for reducing black marks on billets. Background technique [0002] The structural design of the supporting beam of the modern walking heating furnace generally adopts the structure of double water pipes and heat-resistant pads. The water pipes are cooled by water or vaporization, and the outside is wrapped with composite insulation materials. Since the steel billet is in direct contact with the heat-resistant pad, and the heat-resistant pad is in contact with the water pipe, the temperature of the top surface of the heat-resistant pad is relatively low, and the surface heat flow of the local area where the billet is in contact with the heat-resistant pad is low. During the heating process A local low temperature area is formed in the center, and ...
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IPC IPC(8): F27B9/30
Inventor 赵俣马光宇刘常鹏徐鹏飞张天赋贾丽娣王向锋
Owner ANGANG STEEL CO LTD