Water-based high temperature resistant titanium-steel adhesive coating and its application

Abstract

The invention relates to a coating preventing intermetallic bonding, in particular to a water-based high-temperature-resisting coating preventing titanium-steel bonding and application of the coating to preparation of titanium ingots. The water-based high-temperature-resisting coating preventing titanium-steel bonding is prepared from, by weight, 50-150 parts of a water-based film forming agent, 0-50 parts of Zn powder, 400-450 parts of Al2O3, 100-150 parts of talcum powder and 200-300 parts of Fe2O3 powder. The coating can guarantee that a titanium pipe does not react with a steel equipment roller or a winch in a bonding mode in the 900-DEG C rolling or punching process, and the yield and the production efficiency of titanium processing are improved; the process is simple, operation is easy, the coating is environmentally friendly and free of pollution, and a preparation method is simple.

Description

technical field [0001] The invention relates to a coating for preventing bonding between metals, in particular to a water-based high-temperature resistant titanium-steel bonding coating and its application in the preparation process of titanium ingots. Background technique [0002] At present, domestic manufacturers have not reported the use of high-temperature resistant titanium-steel anti-adhesion coatings in the process of producing titanium tubes using titanium ingot round billets; titanium ingot round billets must be kept in the heating furnace at 900 ° C for more than 4 hours before they can be pushed out of the heating furnace for titanium tubes. Rolling work. After titanium and its alloys are kept at a high temperature of 900°C for 4 hours, the phenomenon of "titanium sticking" occurs with the steel rolling equipment, roller table and rolling winch, which causes the phenomenon of "lack of meat" at different depths on the surface of the titanium tube. When rolling ti...

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Problems solved by technology

If the TiFe phase is formed on the surface of the titanium tube, it will seriously affect the mechanical properties and structure of the titanium surface, causing various defects, loss, corrosion resistance and other defects in the subsequent processing and use of the titanium tube; in addition, due to the "equipment sticking titanium "As a result, in the subsequent rolling process, the equipment must be ground first before the subsequent titanium billets can be rolled again.

It is impossible to continuously roll titanium tubes or titanium products, which wastes a lot of time and energy consumption; at the same time, in order to ensure the dimensional accuracy and surface quality of the inner and outer diameters of titanium tubes, domestic manufacturers always cut them, which results in greater losses , since the titanium ingot is made by the reaction of sponge titanium, cutting off the inner and outer parts of the titanium tube will seriously affect the cost and yield of titanium materials, so it is very necessary to protect the high-temperature resistant titanium-steel anti-bonding coating

[0003] However, in the prior art, before the titanium ingot is annealed, it is sprayed on the surface of the titanium ingot, and the surface of each titanium ingot is sprayed. In addition, the paint needs a certain period of time to dry after spraying, so the preparation process becomes complicated. , the preparation time is extremely long, and it cannot be continuously and efficiently produced

In the rolling process of titanium tubes, due to the deformation of titanium ingots, the effect of spraying the coating on the surface of titanium ingots to prevent titanium-steel bonding is not good

If the paint is directly sprayed on the surface of the rolling capstan, due to the different materials of the capstan and the titanium ingot, the film forming and adhesion effects are poor, and it cannot prevent titanium-steel bonding well

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