Repair paint of moulding wind-shielding ring for foundry furnace

Abstract

A repair paint of a moulding wind-shielding ring for a foundry furnace comprises the following components in parts by weight: 10-20 parts of refractory mortar, 70-80 parts of 80-90 meshes of quartz sand, 5-15 parts of coal tar and the balance water. The paint also contains graphite powder mixture which accounts for 5-15% of the total weight of the paint, wherein the graphite powder mixture comprises the following components in parts by weight: 50-70 parts of flaky graphite powder, 20-40 parts of bentonite and 5-15 parts of carboxymethyl cellulose. The repair paint has better repair effect, wide application range, lower production cost and higher toughness and is suitable for the repair of the net structure.

Description

technical field [0001] The invention relates to a paint, in particular to a repair paint for a formed windshield for a foundry furnace, and is particularly suitable for repairing a formed windshield for a foundry furnace. Background technique [0002] Casting furnaces are generally used for continuous casting of castings. They are widely used because of their strong heating capacity, gap operation, low assembly cost, and good sealing effect. However, since the foundry furnace has been in a high temperature environment for a long time, and it is often in contact with the molten casting liquid, the local position of the casting furnace often breaks. , therefore, it is a good choice to repair the broken part. [0003] The Chinese patent publication number is CN101279854A, and the invention patent published on October 8, 2008 discloses a coil insulation safety furnace lining material. According to the total mass of 100%, each component is 73-85% of fused corundum, aluminate Sa...

AI Technical Summary

Problems solved by technology

Although the materials involved in this invention have high refractoriness and good insulation performance, and can also be partially repaired, because they can only be used for repairing themselves, they cannot be used for repairing casting furnaces made of other materials. The application range is narrow, and its components are more expensive, and the production cost is higher. In addition, the mechanical strength and toughness of the repair material are poor, and the toughness is weak, so it is not suitable for the repair of the mesh structure.