METHOD FOR HOT PRESSURE WELDING

摘要

FIELD: welding tubes with corrosion resistant coating. SUBSTANCE: method comprises steps of mechanically working tube ends and butt joining of them; applying compression effort to butt and heating it until temperature consisting 0.8 - 0.9 of melting temperature value; after achieving temperature 768 -910 C applying additional effort. EFFECT: enhanced quality of joint without damaging corrosion-resistant coating.