A kind of continuous casting billet burr release agent and burr removal method

A technology of release agent and billet, applied in the field of steel cutting, which can solve the problems of damage, shortening the working cycle of the roll, and scratching the surface of the roll.

A technology of release agent and billet, applied in the field of steel cutting, which can solve the problems of damage, shortening the working cycle of the roll, and scratching the surface of the roll.

CN109248996BActive Publication Date: 2020-05-29ANGANG STEEL CO LTD
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  • A kind of continuous casting billet burr release agent and burr removal method
  • A kind of continuous casting billet burr release agent and burr removal method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Prepare the burr release agent according to the formula of the present invention, adopt NaOH solution and SiO 2 According to silicon atom and OH -1 The molar ratio of ions is 1.5 to prepare an aqueous solution, and the pH value of the aqueous solution is 10.5; when in use, add TiO to the aqueous solution 2 Mix evenly after powder, TiO 2 The particle size of the powder is 20 μm, TiO 2 The mass of the powder accounts for 60% of the total mass of the two; the mixed burr release agent is a suspension in which fixed particles are evenly dispersed.

[0043] With the cutting line on the lower surface of the continuous casting billet to be cut as the center, spray a burr release agent coating with a width of 80mm, and spray along the cutting direction of the continuous casting billet. The thickness of the burr release agent coating is 0.2mm.

[0044] Due to the blocking effect of the burr release agent, the burr generated during the cutting process of the continuous casting ...

Embodiment 2

[0046] Prepare the burr release agent according to the formula of the present invention, adopt NaOH solution and SiO 2 According to silicon atom and OH -1 The molar ratio of ions is 1.75 to prepare an aqueous solution, and the pH value of the aqueous solution is 10.75; when in use, add TiO to the aqueous solution 2 Mix evenly after powder, TiO 2 The particle size of the powder is 30 μm, TiO 2 The mass of the powder accounts for 70% of the total mass of the two; the mixed burr release agent is a suspension in which fixed particles are uniformly dispersed.

[0047] With the cutting line on the lower surface of the continuous casting billet to be cut as the center, spray a burr release agent coating with a width of 160mm, and spray along the continuous casting billet cutting direction, and the thickness of the burr release agent coating is 1.0mm.

[0048] Due to the blocking effect of the burr release agent, the burr generated during the cutting process of the continuous casting...

Embodiment 3

[0050] Prepare the burr release agent according to the formula of the present invention, adopt NaOH solution and SiO 2 According to silicon atom and OH -1 The molar ratio of ions is 2 to prepare an aqueous solution, and the pH value of the aqueous solution is 11; when in use, add TiO to the aqueous solution 2 Mix evenly after powder, TiO 2 The particle size of the powder is 40 μm, TiO 2 The mass of the powder accounts for 70% of the total mass of the two; the mixed burr release agent is a suspension in which fixed particles are uniformly dispersed.

[0051] With the cutting line on the lower surface of the continuous casting billet to be cut as the center, spray a burr release agent coating with a width of 200mm, and spray along the continuous casting billet cutting direction, and the thickness of the burr release agent coating is 1.0mm.

[0052] Due to the blocking effect of the burr release agent, the burr generated during the cutting process of the continuous casting bil...

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Abstract

The invention relates to a burr isolating agent for a continuously cast steel billet and a burr removal method. Before cutting of the continuously cast steel billet, the burr isolating agent is sprayed onto the lower surface of the continuously cast steel billet along a cutting track, and then the continuously cast steel billet is cut; after burrs generated during cutting detach from a continuouscast steel billet body, under the isolating effect of the burr isolating agent, the burrs directly shed or are bonded to the continuously cast steel billet body through the burr isolating agent instead of being directly in contact with the continuously cast steel billet body and welded to the continuously cast steel billet body; the continuously cast steel billet is conveyed into a heating oven for heating after cutting is finished, and since the burr isolating agent loses effect under high temperature, the bonded burrs automatically shed from the continuously cast steel billet body. The purpose of completely removing the burrs without damaging the continuously cast steel billet body can be achieved.

Description

technical field [0001] The invention relates to the technical field of steel material cutting, in particular to a continuous casting billet burr release agent and a burr removal method. Background technique [0002] The widespread use of continuous casting technology has greatly improved the production capacity of steel billets, which is a revolutionary progress in steel production technology. During the continuous casting process, the continuously poured billets are cut into billets of specified length by corresponding flame cutting equipment. During the billet cutting process, the high-temperature flame melts the cutting part of the billet, the molten steel cools down rapidly, and welds on the lower surface of the billet to form billet burrs, which will cause the following hazards in the subsequent process: 1. The burrs are rolled into particles and Adhering to the surface of hot-rolled products, thereby affecting the flatness and smoothness of the product, reducing produ...

Claims

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Application Information

Patent Timeline
29 May 2020
Publication
CN109248996B
IPC
B22D11/126
CPC
B22D11/1265
Inventors
张天赋; 王向锋