The present apparatus relates to a two-component anti-seizure abettor for hot metal alive action for inhibiting abduction amid adviser shoes and a aqueduct or a tube (hereinafter, accredit to "a pipe" as "a aqueduct or a tube".) in a piercing-rolling action of seamless pipe assembly application a piercing-rolling comminute accepting disk-roll blazon adviser shoes, decidedly a piercing-rolling comminute accepting axle disk-roll blazon adviser shoes of which rotational arbor is vertical to the apparent of the earth. Also, the present apparatus relates to a adjustment of accomplishment seamless pipe application the anti-seizure agent.

When seamless aqueduct assembly by hot rolling is agitated out by Mannesmann process, it is acclaimed that abduction blemish alleged "shoe mark" is produced on the apparent of seamless aqueduct during piercing-rolling action of a seamless aqueduct application a piercing-rolling comminute because of the acquaintance amid the actual for seamless aqueduct (hereinafter, it may be referred to "pipe material".) and adviser shoes of the piercing-rolling mill.

In adjustment to break this problem, for example, Patent certificate 1 discloses a piercing-rolling adjustment area a alloyed aqueous blazon blanket actual (which is provided by abacus sodium silicate (water glass) as a adhesive to metal oxide particles such as adamant oxide) is activated assimilate the circumferential apparent of adviser shoes. In addition, Patent certificate 2 discloses lubricants for hot action composed of an aqueous band-aid absolute an adamant oxide, a sodium silicate, a starch, and a xanthan gum.

Moreover, Patent certificate 3 discloses a hot-rolling adjustment to anatomy a blanket assimilate adviser shoes and so on by applying a coat-forming band-aid mainly absolute aqueous polymer alkali able by non-aqueous polymeric acerbic and a coat-forming added band-aid absolute able acerbic or aluminum alkali thereof as the capital basic to accomplish blanket basic in the polymer alkali drop from the coat-forming solution.

Accordingly, an article of the present apparatus is to accommodate an anti-seizure abettor which is able not to be calmly done abroad already adhered to the acquaintance apparent amid a aqueduct actual and adviser shoes; not to attach to the rolls, for the anti-seizure abettor which adhered to the acquaintance apparent amid a aqueduct actual and adviser shoes; and to arrest accident of flaws after causing slippage amid the rolls and a aqueduct material. Another article of the present apparatus is to accommodate a adjustment of accomplishment seamless aqueduct application the anti-seizure agent.

Thus, in the present action for bearing a metal-made seamless pipe, balmy dehydration is conducted for a accustomed breadth of time from the achievement of the extrusion. This balmy dehydration is all-important to abolish the banishment strain, etc. actual appropriate afterwards the banishment (i.e., at the alpha of drying). In dehydration of a pipe-shaped actual in particular, the dehydration acceleration is accordingly college than that of a solid (non-hollow) material. Therefore, its dehydration appropriate afterwards banishment needs to be mild. Residual banishment accent becomes a capital could cause for battlefront deformation, etc.

As to the alertness of the mixture, there is no accurate restriction. In this step, if the agreeable of the metal crumb is beneath than 80% by weight, dehydration cracks may appear; if the agreeable of the metal crumb is added than 98% by weight, the burning of the metal particles may be insufficient.

As shown in Table 1, when the porosity of the metal-made seamless pipe exceeds 25%, its gastightness is low.

Herein, the "gastightness" is measured by fitting a metal-made pipe of 1 mm in outer diameter, 0.7 mm in inner diameter (therefore, 0.3 mm in thickness) and 100 mm in length to a He detector. When the pipe sample number is 10 and all the samples are gastight, the gastightness of the pipe is taken as 100%. The term "gastight" refers to the results of the He leakage test, when the leakage rate is 1.0×10-10 atm.cc/sec or less.

The lower limit of the outer surface porosity is determined by the wettability toward other substances, particularly, cement, ceramic, glass or the like. A lower limit smaller than 0.3% is not preferred, as is clear from the results of the following peeling test.

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