The special process can make carbide grain size much smaller, ledeburite carbide network much smaller to reduce material segregation. and improve material quality.
The technology has been researched and developed by ourself, it’s unique.
The rapid solidification, and fast speed cooling, lead to the shallow melting pool, and the carbide will solidify when it is too late to grow up
(fast cooling) (rapid solidification) (Shorten the growth time of carbide size, so it never grows up to big size )
Elemental spectral analysis + traceable sample retention + ex-factory testing
Flaw detection:, l time, (After sand grinding, before forging)
Inspection report before delivery
3 times to test as below: 1) After RS ESR (or ESR}+annealing, Sand grinding to test the steel ingot 2) After forging +Annealing to get the billet to test {Before start rolling) 3) After finish the rolling bar to test
1) Color marking (Each worker have one color card to correctly distinguish) 2) 2 times Spark Discrimination after rolling the bar 1 st time: Before forging, 2nd time: After rolling bar
Spectral analysis, carbide grade distribution, carbide size to test PS: Internal quality: as long as the directional process(RS ESR) is done out which will be good quality
