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Efficient double-face one-shot enameling machining process for hot-rolled steel plate

A hot-rolled steel plate and processing technology, which is applied in the field of high-efficiency processing technology of double-sided enamel of hot-rolled steel plate, can solve the problems of inferior market competitiveness, affecting the surface quality of enamel, and high production cost, and achieves improvement of scale and explosion defects, removal of Pinhole defects, the effect of reducing production costs

Inactive Publication Date: 2020-11-17
SHIJIAZHUANG ZHENGZHONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main performance of the bottom glaze is that it has good wetting performance and good adhesion to the surface of the steel plate, and it has anti-scale explosion performance; the main performance of the top glaze is that it has good melting and flatness, gloss, and good acid resistance. Alkali resistance, heat resistance and beautiful color; the traditional hot-rolled steel double-sided enamel one bottom and one side process has high production costs, and the market competitiveness is gradually at a disadvantage; and the primary enamel process is between the steel plate and the glaze in the production process. In the presence of hydrogen, there will be a scale explosion phenomenon that will affect the surface quality of the enamel, resulting in hot-rolled steel double-sided one-time enamelling, which has not been used in the market.

Method used

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  • Efficient double-face one-shot enameling machining process for hot-rolled steel plate
  • Efficient double-face one-shot enameling machining process for hot-rolled steel plate
  • Efficient double-face one-shot enameling machining process for hot-rolled steel plate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment one: hot-rolled steel plate double-sided primary enamel high-efficiency processing technology is characterized in that: the composition of enamel glaze and the parts by weight of each component are:

[0018]

[0019]

[0020] A enamel process includes the following steps: (a), glaze synthesis; (b), hot-rolled steel plate glaze coating; (c), glaze firing; the glaze synthesis includes: mixing and stirring the above raw materials, putting melted in a rotary furnace, and after the raw materials are melted evenly, they are hot-pressed into glaze flakes for subsequent use; when needed, grind the glaze flakes through a ball mill to make dry glaze powder, put them into a mixing container, add water and dry glaze The powder is fully stirred and combined to form the final glaze slurry ready for spraying; the glaze application of the hot-rolled steel plate includes: selecting a 3mm thick hot-rolled steel plate, fixing it on the bracket with bolts, and starting to d...

Embodiment 2

[0022] For hot-rolled steel plates with different thicknesses, the operating parameters should be adjusted according to the actual situation. For example, if you choose a hot-rolled steel plate with a thickness of 5mm, the hot-rolled steel plate will be fixed and supported by the bracket (the bracket installed with the firing area for suspension support) and bolts. The surface is sand blasted to remove rust. During the sand blasting process, the staff use the spray gun to form an angle of about 30-45 degrees with the steel plate, which is beneficial to remove the rust, scale and other sundries on the surface of the hot-rolled steel plate. After the removal is completed, the staff again Use an air gun to clean the surface of the hot-rolled steel plate, and blow off the dust and rust particles remaining on the surface of the hot-rolled steel plate during the derusting process, so as to avoid the combination of the residual substance and the glaze when spraying the glaze, which wil...

Embodiment 3

[0024] In the composition structure, adding lead oxide increases the fluidity of the glaze at high temperature during the firing process. After the hydrogen gas in the middle part of the glaze and the steel plate is discharged from the inside, the glaze itself relies on liquid viscosity and The fluidity automatically fills the pits caused by the scale explosion, so as to achieve a smooth effect; putting sodium nitrate and potassium nitrate or one of them in the composition structure can promote the melting of the glaze components during firing and prevent premature reduction Phenomena, avoiding the defect of pinholes; by adding a high content of cobalt and nickel to the glaze of primary enamel, under the action of high temperature, the adhesion between the glaze and the steel plate is enhanced, and the tight adhesion can reduce the gap between the two. The formed bubble-like airtight space eliminates the hydrogen content between the hot-rolled steel plate and the glaze, and red...

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Abstract

The invention relates to the technical field of enameling processes, in particular to an efficient double-face one-shot enameling machining process for a hot-rolled steel plate. The efficient double-face one-shot enameling machining process comprises the following steps: (a) synthesizing a glaze; (b) coating the hot-rolled steel plate with the glaze; and (c) firing the glaze. The synthesis of theglaze comprises the following steps: mixing and stirring the above raw materials, melting the raw materials in a rotary furnace, and after uniform melting of the raw materials, carrying out hot pressing to obtain a glaze sheet for later use; and when the glaze is to be used, grinding the glaze sheet into dry glaze powder through a ball mill, putting the dry glaze powder into a stirring container,adding water, and fully stirring and combining the water with the dry glaze powder so as to form final glaze slurry which is prepared for spraying. According to the efficient double-face one-shot enameling machining process for the hot-rolled steel plate in the invention, molding of an enamel surface can be finished by one-step enamel firing, thereby effectively avoiding the occurrence of fish scaling and pinhole defects.

Description

technical field [0001] The invention relates to the technical field of enamel technology, in particular to a high-efficiency processing technology for one-time enamel on both sides of a hot-rolled steel plate. Background technique [0002] The traditional process of domestic hot-rolled steel double-sided enamel is one pass of bottom glaze and one pass of top glaze. The main performance of the bottom glaze is that it has good wetting performance and good adhesion to the surface of the steel plate, and it has anti-scale explosion performance; the main performance of the top glaze is that it has good melting and flatness, gloss, and good acid resistance. Alkali resistance, heat resistance and beautiful color; the traditional hot-rolled steel double-sided enamel one bottom and one side process has high production costs, and the market competitiveness is gradually at a disadvantage; and the primary enamel process is between the steel plate and the glaze in the production process....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C8/00C23D1/00C23D5/02C23D7/00C23D11/00
CPCC03C8/00C23D1/00C23D5/02C23D7/00C23D11/00C03C2207/04
Inventor 丁少坤丁文战
Owner SHIJIAZHUANG ZHENGZHONG TECH