A pasteable thermal insulation cotton for alloy hot rolling and its manufacturing method

Abstract

The invention discloses sticky heat-insulating cotton for hot rolling of an alloy and a manufacturing method of the sticky heat-insulating cotton. The manufacturing method comprises the following steps of: first, forming holes for pouring a dual binder in the overall front surface of the heat-insulating cotton; then, placing a friction matter at the bottoms of the holes; next, preparing the dual binder by mixing a mixture consisting of a room-temperature binder and glass powder with a high softening point and water; and finally, pouring the dual binder into the holes. A material for strengthening the friction force between a workpiece and a roller is embedded into the sticky heat-insulating cotton to serve as the friction matter, so that the friction force between the heated workpiece which is coated by the sticky heat-insulating cotton at a high temperature and the roller can be strengthened remarkably; and the contradiction between lubrication and friction during hot rolling with heat preservation by using the glass powder-containing heat-insulating cotton is balanced reasonably, and therefore, the hot tolling with heat preservation can be performed smoothly.

Description

technical field [0001] The invention relates to an insulating material for thermal insulation and hot-rolling of difficult-to-deform alloys, in particular a stickable thermal-insulation cotton for alloy hot-rolling, which is mainly used as thermal-insulation material for thermal-insulation and hot-rolling of difficult-to-deform high-temperature alloys, and can also be used as heat-insulation materials for difficult-to-deform high-temperature alloys and titanium alloys. Insulation material for heat preservation and hot rolling of difficult-to-deform stainless steel. The present invention also relates to a method for manufacturing the above-mentioned thermal insulation material. Background technique [0002] Difficult-to-deform superalloys are the key special metal materials of modern high-end power devices. The hot-working temperature range is narrow and the deformation resistance is large. Sufficient and effective insulation measures must be taken for the hot-rolled billet (...

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Problems solved by technology

The glass frit in the adiabatic wool that can be pasted above is used as a binder between the adiabatic wool and the heated workpiece. Even though the softening point is high and the lubricity is low, since the heating temperature of the workpiece is significantly higher than the softening point in the glass frit, the The glass powder is in a molten state. When this pasteable thermal insulation cotton is pasted on the surface of a high-temperature alloy workpiece (rolling) for thermal insulation and hot rolling, the friction between the workpiece and the roll will be significant due to the lubricating effect of the glass powder in the pasteable thermal insulation cotton. reduce, resulting in slippage between the workpiece and the roll, the roll is in an idling state, and the ring billet is in a state of zero deformation at the original position, and heat preservation and hot rolling cannot be carried out. Relevant tests have shown that the above-mentioned stickable heat insulation cotton cannot be used for heat preservation and hot rolling of difficult-to-deform alloys

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