The invention discloses a
forging forming technology for a high-temperature steam pipeline of a supercritical unit. The
forging forming technology comprises the steps that firstly, a heat-resisting steel
ingot is selected and used; secondly, the steel
ingot is heated up to 580 DEG C to 620 DEG C, and heat preservation is carried out for 3 hours; the steel
ingot is heated up to 830 DEG C to 870 DEG C at a rate
ranging from 55 DEG C / h to 60 DEG C / h; heat preservation is carried out for 4 hours; the steel ingot is heated up to 1130 DEG C to 1170 DEG C at a rate
ranging from 78 DEG C / h to 82 DEG C / h; heat preservation is carried out for 4 hours; the steel ingot is heated up to 1210 DEG C to 1250 DEG C at a rate
ranging from 78 DEG C / h to 82 DEG C / h; heat preservation is carried out for 2 hours; thirdly, the heated steel ingot is taken from a furnace, the head and the
tail of the steel ingot are chopped off; fourthly, upsetting is carried out on a
forging stock, and an upset piece is drawn out to form a square flat forging stock; fifthly, a tilted three-way
forge piece is formed by the forging stock; sixthly, a
branch pipe hole is punched; seventhly, main
pipe holes are punched at the two ends of a main
pipe body of the tilted three-way
forge piece respectively; eighthly, heat treatment is carried out after forging. According to the forming technology, the production efficiency is high, internal organizations of the
forge piece is even and dense, the forming technology is applicable to forging forming of tilted three-way forge pieces of supercritical units and ultra supercritical units with various specifications.