C\u00f3, th\u00e9p h\u1ee3p kim c\u00f3 th\u1ec3 h\u00e0n th\u00e0nh c\u00f4ng, nh\u01b0ng c\u1ea7n c\u00f3 c\u00e1c k\u1ef9 thu\u1eadt chuy\u00ean bi\u1ec7t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u1ed1i h\u00e0n ch\u1eafc ch\u1eafn, b\u1ec1n. Do c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 \u0111\u1ed9 nh\u1ea1y nhi\u1ec7t v\u00e0 th\u00e0nh ph\u1ea7n h\u1ee3p kim, h\u00e0n th\u00e9p h\u1ee3p kim \u0111\u1eb7t ra nh\u1eefng th\u00e1ch th\u1ee9c ri\u00eang.<\/p>
T\u1ea1i SteelPro Group, ch\u00fang t\u00f4i c\u00f3 chuy\u00ean m\u00f4n \u0111\u1ec3 gi\u1ea3i quy\u1ebft nh\u1eefng th\u00e1ch th\u1ee9c n\u00e0y v\u00e0 cung c\u1ea5p c\u00e1c m\u1ed1i h\u00e0n ch\u1ea5t l\u01b0\u1ee3ng cao, tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh. H\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn b\u1ea1n c\u00e1c ph\u01b0\u01a1ng ph\u00e1p h\u00e0n t\u1ed1t nh\u1ea5t, c\u00e1c tr\u1edf ng\u1ea1i th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e1c gi\u1ea3i ph\u00e1p chuy\u00ean nghi\u1ec7p \u0111\u1ec3 gi\u00fap b\u1ea1n c\u00f3 \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t khi l\u00e0m vi\u1ec7c v\u1edbi th\u00e9p h\u1ee3p kim.<\/p>
Th\u00e9p h\u1ee3p kim l\u00e0 m\u1ed9t lo\u1ea1i th\u00e9p k\u1ebft h\u1ee3p h\u1ed7n h\u1ee3p s\u1eaft, cacbon v\u00e0 c\u00e1c nguy\u00ean t\u1ed1 b\u1ed5 sung\u2014g\u1ecdi l\u00e0 nguy\u00ean t\u1ed1 h\u1ee3p kim\u2014\u0111\u1ec3 c\u1ea3i thi\u1ec7n c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a n\u00f3. C\u00e1c nguy\u00ean t\u1ed1 n\u00e0y, nh\u01b0 crom, niken, mangan v\u00e0 vanadi, \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o v\u1edbi s\u1ed1 l\u01b0\u1ee3ng ch\u00ednh x\u00e1c \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c ph\u1ea9m ch\u1ea5t c\u1ee5 th\u1ec3 nh\u01b0 \u0111\u1ed9 b\u1ec1n, \u0111\u1ed9 d\u1ebbo dai, kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 \u0111\u1ed9 b\u1ec1n \u1edf nhi\u1ec7t \u0111\u1ed9 cao.<\/p>
Th\u00e9p h\u1ee3p kim nh\u1ea1y c\u1ea3m v\u1edbi nhi\u1ec7t do th\u00e0nh ph\u1ea7n ph\u1ee9c t\u1ea1p c\u1ee7a ch\u00fang. Khi ti\u1ebfp x\u00fac v\u1edbi nhi\u1ec7t \u0111\u1ed9 cao trong qu\u00e1 tr\u00ecnh h\u00e0n, th\u00e9p s\u1ebd gi\u00e3n n\u1edf v\u00e0 co l\u1ea1i nhanh ch\u00f3ng, c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn n\u1ee9t ho\u1eb7c bi\u1ebfn d\u1ea1ng. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t \u0111\u00fang \u0111\u1ed1i v\u1edbi th\u00e9p h\u1ee3p kim cao, trong \u0111\u00f3 c\u00e1c nguy\u00ean t\u1ed1 h\u1ee3p kim (nh\u01b0 crom v\u00e0 niken) \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn h\u00e0nh vi c\u1ee7a th\u00e9p \u1edf nhi\u1ec7t \u0111\u1ed9 cao. \u0110i\u1ec1u n\u00e0y l\u00e0m cho vi\u1ec7c ki\u1ec3m so\u00e1t c\u1ea9n th\u1eadn l\u01b0\u1ee3ng nhi\u1ec7t \u0111\u1ea7u v\u00e0o v\u00e0 t\u1ed1c \u0111\u1ed9 l\u00e0m m\u00e1t trong qu\u00e1 tr\u00ecnh h\u00e0n tr\u1edf n\u00ean c\u1ea7n thi\u1ebft \u0111\u1ec3 tr\u00e1nh h\u01b0 h\u1ecfng.<\/p>
Qu\u1ea3n l\u00fd l\u01b0\u1ee3ng nhi\u1ec7t \u0111\u1ea7u v\u00e0o v\u00e0 t\u1ed1c \u0111\u1ed9 l\u00e0m m\u00e1t l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 ng\u0103n ng\u1eeba n\u1ee9t nhi\u1ec7t v\u00e0 cong v\u00eanh. L\u00e0m n\u00f3ng th\u00e9p tr\u01b0\u1edbc khi h\u00e0n c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3m thi\u1ec3u \u1ee9ng su\u1ea5t nhi\u1ec7t, trong khi x\u1eed l\u00fd nhi\u1ec7t sau h\u00e0n (PWHT) c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m \u1ee9ng su\u1ea5t d\u01b0 v\u00e0 cung c\u1ea5p th\u00eam kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 cho v\u1eadt li\u1ec7u.<\/p>
S\u1ef1 gi\u00f2n do hydro x\u1ea3y ra khi kh\u00ed hydro \u0111\u01b0\u1ee3c h\u1ea5p th\u1ee5 v\u00e0o th\u00e9p trong qu\u00e1 tr\u00ecnh h\u00e0n. \u0110i\u1ec1u n\u00e0y l\u00e0m y\u1ebfu v\u1eadt li\u1ec7u v\u00e0 khi\u1ebfn v\u1eadt li\u1ec7u d\u1ec5 b\u1ecb n\u1ee9t. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t c\u00f3 v\u1ea5n \u0111\u1ec1 v\u1edbi c\u00e1c h\u1ee3p kim c\u00f3 \u0111\u1ed9 b\u1ec1n cao, c\u00f3 xu h\u01b0\u1edbng h\u1ea5p th\u1ee5 nhi\u1ec1u hydro h\u01a1n.<\/p>
\u0110\u1ec3 gi\u1ea3m thi\u1ec3u r\u1ee7i ro n\u00e0y, \u0111\u1ed9 \u1ea9m ph\u1ea3i \u0111\u01b0\u1ee3c gi\u1eef \u1edf m\u1ee9c th\u1ea5p nh\u1ea5t c\u00f3 th\u1ec3 trong qu\u00e1 tr\u00ecnh h\u00e0n. S\u1eed d\u1ee5ng \u0111i\u1ec7n c\u1ef1c hydro th\u1ea5p v\u00e0 \u0111\u1ea3m b\u1ea3o x\u1eed l\u00fd nhi\u1ec7t sau h\u00e0n (PWHT) \u0111\u00fang c\u00e1ch c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3 nguy c\u01a1 gi\u00f2n v\u00e0 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 b\u1ec1n c\u1ee7a m\u1ed1i h\u00e0n.<\/p>
H\u00e0n t\u1ea1o ra nhi\u1ec7t \u0111\u1ed9 cao, c\u00f3 th\u1ec3 khi\u1ebfn b\u1ec1 m\u1eb7t th\u00e9p ph\u1ea3n \u1ee9ng v\u1edbi oxy, t\u1ea1o th\u00e0nh oxit. C\u00e1c oxit n\u00e0y l\u00e0m y\u1ebfu m\u1ed1i h\u00e0n v\u00e0 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn li\u00ean k\u1ebft k\u00e9m gi\u1eefa v\u1eadt li\u1ec7u c\u01a1 b\u1ea3n v\u00e0 kim lo\u1ea1i ph\u1ee5.<\/p>
\u0110\u1ec3 b\u1ea3o v\u1ec7 m\u1ed1i h\u00e0n kh\u1ecfi qu\u00e1 tr\u00ecnh oxy h\u00f3a, \u0111i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i l\u00e0m s\u1ea1ch v\u1eadt li\u1ec7u tr\u01b0\u1edbc khi h\u00e0n v\u00e0 s\u1eed d\u1ee5ng kh\u00ed b\u1ea3o v\u1ec7 (nh\u01b0 argon ho\u1eb7c carbon dioxide) \u0111\u1ec3 b\u1ea3o v\u1ec7 v\u0169ng h\u00e0n n\u00f3ng ch\u1ea3y kh\u1ecfi oxy. \u0110i\u1ec1u n\u00e0y gi\u00fap duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a m\u1ed1i h\u00e0n.<\/p>
S\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a c\u00e1c nguy\u00ean t\u1ed1 h\u1ee3p kim kh\u00e1c nhau trong th\u00e9p \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng h\u00e0n c\u1ee7a n\u00f3. V\u00ed d\u1ee5, h\u00e0m l\u01b0\u1ee3ng crom v\u00e0 niken cao th\u00fac \u0111\u1ea9y s\u1ef1 h\u00ecnh th\u00e0nh austenit, \u0111\u00f2i h\u1ecfi c\u00e1c k\u1ef9 thu\u1eadt h\u00e0n ch\u00ednh x\u00e1c h\u01a1n. M\u1ed9t s\u1ed1 th\u00e0nh ph\u1ea7n h\u1ee3p kim c\u0169ng c\u00f3 th\u1ec3 khi\u1ebfn v\u1eadt li\u1ec7u d\u1ec5 b\u1ecb n\u1ee9t h\u01a1n trong qu\u00e1 tr\u00ecnh h\u00e0n.<\/p>
Hi\u1ec3u \u0111\u01b0\u1ee3c th\u00e0nh ph\u1ea7n h\u1ee3p kim cho ph\u00e9p th\u1ee3 h\u00e0n l\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p h\u00e0n, v\u1eadt li\u1ec7u h\u00e0n v\u00e0 quy tr\u00ecnh ki\u1ec3m so\u00e1t nhi\u1ec7t ph\u00f9 h\u1ee3p. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch gi\u1eefa kim lo\u1ea1i c\u01a1 b\u1ea3n v\u00e0 kim lo\u1ea1i h\u00e0n, gi\u1ea3m thi\u1ec3u nguy c\u01a1 n\u1ee9t ho\u1eb7c m\u1ed1i h\u00e0n y\u1ebfu.<\/p>
H\u00e0n TIG ch\u00ednh x\u00e1c v\u00e0 l\u00fd t\u01b0\u1edfng cho c\u00e1c ph\u1ea7n m\u1ecfng v\u00e0 m\u1ed1i n\u1ed1i quan tr\u1ecdng. N\u00f3 s\u1eed d\u1ee5ng \u0111i\u1ec7n c\u1ef1c vonfram kh\u00f4ng ti\u00eau hao v\u00e0 kh\u00ed tr\u01a1 (th\u01b0\u1eddng l\u00e0 argon) \u0111\u1ec3 b\u1ea3o v\u1ec7 m\u1ed1i h\u00e0n. K\u1ef9 thu\u1eadt n\u00e0y cung c\u1ea5p kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t nhi\u1ec7t ch\u00ednh x\u00e1c, t\u1ea1o ra m\u1ed1i h\u00e0n s\u1ea1ch v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng cao. H\u00e0n TIG \u0111\u1eb7c bi\u1ec7t c\u00f3 l\u1ee3i cho c\u00e1c h\u1ee3p kim \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c l\u0129nh v\u1ef1c nh\u01b0 h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 v\u00e0 \u00f4 t\u00f4.<\/p>
H\u00e0n MIG nhanh v\u00e0 hi\u1ec7u qu\u1ea3, r\u1ea5t ph\u00f9 h\u1ee3p cho c\u00e1c ph\u1ea7n th\u00e9p h\u1ee3p kim d\u00e0y h\u01a1n. N\u00f3 s\u1eed d\u1ee5ng \u0111i\u1ec7n c\u1ef1c d\u00e2y n\u00f3ng ch\u1ea3y khi \u0111\u01b0\u1ee3c \u0111\u01b0a qua s\u00fang h\u00e0n. MIG cung c\u1ea5p t\u1ef7 l\u1ec7 l\u1eafng \u0111\u1ecdng cao, ph\u00f9 h\u1ee3p cho c\u00e1c d\u1ef1 \u00e1n s\u1ea3n xu\u1ea5t v\u00e0 x\u00e2y d\u1ef1ng. M\u1eb7c d\u00f9 kh\u00f4ng ch\u00ednh x\u00e1c nh\u01b0 TIG, h\u00e0n MIG r\u1ea5t linh ho\u1ea1t v\u00e0 ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 tr\u00ean nhi\u1ec1u \u0111\u1ed9 d\u00e0y v\u1eadt li\u1ec7u kh\u00e1c nhau.<\/p>
H\u00e0n que linh ho\u1ea1t v\u00e0 d\u1ec5 v\u1eadn chuy\u1ec3n, l\u00e0m cho n\u00f3 ho\u00e0n h\u1ea3o cho c\u00f4ng vi\u1ec7c trong m\u00f4i tr\u01b0\u1eddng ngo\u00e0i tr\u1eddi. N\u00f3 s\u1eed d\u1ee5ng m\u1ed9t \u0111i\u1ec7n c\u1ef1c \u0111\u01b0\u1ee3c ti\u00eau th\u1ee5 trong qu\u00e1 tr\u00ecnh n\u00e0y, \u0111\u01b0\u1ee3c ph\u1ee7 b\u1eb1ng ch\u1ea5t tr\u1ee3 dung, t\u1ea1o ra kh\u00ed b\u1ea3o v\u1ec7 khi n\u00f3 tan ch\u1ea3y. <\/p>
H\u00e0n que th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c c\u00f4ng vi\u1ec7c \u0111\u00f2i h\u1ecfi cao nh\u01b0 x\u00e2y d\u1ef1ng v\u00e0 \u0111\u00f3ng t\u00e0u, n\u01a1i m\u00f4i tr\u01b0\u1eddng c\u00f3 th\u1ec3 kh\u1eafc nghi\u1ec7t. M\u1eb7c d\u00f9 n\u00f3 c\u00f3 th\u1ec3 kh\u00f4ng cung c\u1ea5p \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a TIG ho\u1eb7c MIG, nh\u01b0ng n\u00f3 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t v\u1edbi c\u00e1c v\u1eadt li\u1ec7u d\u00e0y h\u01a1n.<\/p>
Th\u00e9p h\u1ee3p kim c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c h\u01b0\u1edfng l\u1ee3i t\u1eeb qu\u00e1 tr\u00ecnh gia nhi\u1ec7t tr\u01b0\u1edbc v\u00e0 x\u1eed l\u00fd nhi\u1ec7t sau khi h\u00e0n. Vi\u1ec7c gia nhi\u1ec7t tr\u01b0\u1edbc gi\u00fap gi\u1ea3m thi\u1ec3u s\u1ed1c nhi\u1ec7t v\u00e0 tr\u00e1nh g\u00e3y trong qu\u00e1 tr\u00ecnh h\u00e0n. X\u1eed l\u00fd nhi\u1ec7t sau khi h\u00e0n (PWHT) \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng sau khi h\u00e0n \u0111\u1ec3 gi\u1ea3m \u1ee9ng su\u1ea5t v\u00e0 t\u0103ng c\u01b0\u1eddng c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a v\u1eadt li\u1ec7u. Qu\u00e1 tr\u00ecnh n\u00e0y c\u0169ng gi\u00fap gi\u1ea3m gi\u00f2n do hydro v\u00e0 t\u0103ng c\u01b0\u1eddng m\u1ed1i h\u00e0n.<\/p>
B\u1eaft \u0111\u1ea7u b\u1eb1ng c\u00e1ch v\u1ec7 sinh th\u00e9p \u0111\u1ec3 lo\u1ea1i b\u1ecf b\u1ee5i b\u1ea9n, r\u1ec9 s\u00e9t v\u00e0 ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o b\u1ec1 m\u1eb7t h\u00e0n nh\u1eb5n v\u00e0 h\u1ed7 tr\u1ee3 v\u1eadt li\u1ec7u tr\u00e1m b\u00e1m d\u00ednh t\u1ed1t. N\u1ebfu c\u1ea7n, h\u00e3y nghi\u00eang c\u00e1c c\u1ea1nh c\u1ee7a th\u00e9p \u0111\u1ec3 t\u0103ng \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 xuy\u00ean th\u1ea5u c\u1ee7a m\u1ed1i n\u1ed1i. Chu\u1ea9n b\u1ecb \u0111\u00fang c\u00e1ch gi\u00fap ng\u0103n ng\u1eeba c\u00e1c khuy\u1ebft t\u1eadt nh\u01b0 r\u1ed7 kh\u00ed v\u00e0 m\u1ed1i h\u00e0n y\u1ebfu.<\/p>
Ch\u1ecdn kim lo\u1ea1i h\u00e0n ph\u00f9 h\u1ee3p v\u1edbi th\u00e0nh ph\u1ea7n h\u1ee3p kim c\u1ee7a th\u00e9p. Kim lo\u1ea1i h\u00e0n ph\u1ea3i c\u00f3 c\u00e1c th\u00e0nh ph\u1ea7n t\u01b0\u01a1ng t\u1ef1 (nh\u01b0 crom ho\u1eb7c niken) \u0111\u1ec3 duy tr\u00ec \u0111\u1ed9 b\u1ec1n v\u00e0 t\u00ednh ch\u1ea5t c\u1ee7a m\u1ed1i h\u00e0n. <\/p>
Ngo\u00e0i ra, h\u00e3y c\u00e2n nh\u1eafc s\u1eed d\u1ee5ng kim lo\u1ea1i \u0111\u1ed9n c\u00f3 h\u00e0m l\u01b0\u1ee3ng hydro th\u1ea5p<\/strong> d\u00e0nh cho h\u1ee3p kim c\u00f3 \u0111\u1ed9 b\u1ec1n cao. C\u00e1c ch\u1ea5t ph\u1ee5 gia n\u00e0y \u0111\u01b0\u1ee3c t\u1ea1o ra \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 gi\u1ea3m thi\u1ec3u kh\u1ea3 n\u0103ng gi\u00f2n do hydro, c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m \u0111\u1ed9 b\u1ec1n c\u1ee7a m\u1ed1i h\u00e0n v\u00e0 d\u1eabn \u0111\u1ebfn n\u1ee9t. <\/p> Lu\u00f4n tham kh\u1ea3o th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u1eadt li\u1ec7u v\u00e0 quy tr\u00ecnh h\u00e0n \u0111\u1ec3 ch\u1ecdn kim lo\u1ea1i h\u00e0n t\u1ed1t nh\u1ea5t cho th\u00e9p h\u1ee3p kim c\u1ee7a b\u1ea1n.<\/p> Ki\u1ec3m so\u00e1t nhi\u1ec7t l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 ng\u0103n ng\u1eeba bi\u1ebfn d\u1ea1ng, n\u1ee9t ho\u1eb7c h\u01b0 h\u1ecfng c\u1ea5u tr\u00fac vi m\u00f4 c\u1ee7a th\u00e9p. Nhi\u1ec7t qu\u00e1 cao c\u00f3 th\u1ec3 l\u00e0m y\u1ebfu m\u1ed1i h\u00e0n. Theo d\u00f5i ch\u1eb7t ch\u1ebd l\u01b0\u1ee3ng nhi\u1ec7t \u0111\u1ea7u v\u00e0o v\u00e0 ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 gi\u1eefa c\u00e1c l\u1ea7n h\u00e0n. Gi\u1eef nhi\u1ec7t trong ph\u1ea1m vi khuy\u1ebfn ngh\u1ecb gi\u00fap duy tr\u00ec ch\u1ea5t l\u01b0\u1ee3ng m\u1ed1i h\u00e0n v\u00e0 ng\u0103n ng\u1eeba \u1ee9ng su\u1ea5t.<\/p> Sau khi h\u00e0n, h\u00e3y ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a m\u1ed1i h\u00e0n. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra kh\u00f4ng ph\u00e1 h\u1ee7y (NDT), ch\u1eb3ng h\u1ea1n nh\u01b0 ki\u1ec3m tra b\u1eb1ng tia X ho\u1eb7c si\u00eau \u00e2m, c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c khuy\u1ebft t\u1eadt b\u00ean trong nh\u01b0 v\u1ebft n\u1ee9t ho\u1eb7c l\u1ed7 r\u1ed7ng. Ki\u1ec3m tra b\u1eb1ng m\u1eaft th\u01b0\u1eddng s\u1ebd ki\u1ec3m tra c\u00e1c v\u1ea5n \u0111\u1ec1 b\u00ean ngo\u00e0i nh\u01b0 \u0111\u1ed9 x\u1ed1p ho\u1eb7c s\u1ef1 k\u1ebft d\u00ednh kh\u00f4ng ho\u00e0n to\u00e0n. <\/p> Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, sau khi h\u00e0n, th\u00e9p h\u1ee3p kim c\u00f3 th\u1ec3 c\u1ea7n x\u1eed l\u00fd nhi\u1ec7t sau h\u00e0n (PWHT). \u0110i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i ki\u1ec3m tra th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a v\u1eadt li\u1ec7u v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c quy tr\u00ecnh \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh xem PWHT c\u00f3 c\u1ea7n thi\u1ebft hay kh\u00f4ng.<\/p> SteelPro Group cung c\u1ea5p th\u00e9p h\u1ee3p kim c\u00f9ng c\u00e1c gi\u1ea3i ph\u00e1p h\u00e0n cho c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p n\u00e0y, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t cao v\u00e0 \u0111\u00e1ng tin c\u1eady.<\/p> \u0110\u1ec3 c\u00f3 d\u1ecbch v\u1ee5 h\u00e0n th\u00e9p h\u1ee3p kim chuy\u00ean nghi\u1ec7p, h\u00e3y tin t\u01b0\u1edfng SteelPro Group. Ch\u00fang t\u00f4i chuy\u00ean cung c\u1ea5p th\u00e9p h\u1ee3p kim ch\u1ea5t l\u01b0\u1ee3ng cao nh\u01b0 4140<\/a>, 4130<\/a> d\u01b0\u1edbi nhi\u1ec1u h\u00ecnh th\u1ee9c kh\u00e1c nhau. \u0110\u1ed9i ng\u0169 th\u1ee3 h\u00e0n \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn v\u00e0 thi\u1ebft b\u1ecb ti\u00ean ti\u1ebfn c\u1ee7a ch\u00fang t\u00f4i \u0111\u1ea3m b\u1ea3o k\u1ebft qu\u1ea3 ch\u1ea5t l\u01b0\u1ee3ng cao nh\u1ea5t cho c\u00e1c d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n.<\/p> H\u00e3y li\u00ean h\u1ec7 v\u1edbi SteelPro Group ngay h\u00f4m nay \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u v\u1ec1 th\u00e9p h\u1ee3p kim v\u00e0 t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 c\u00e1c d\u1ecbch v\u1ee5 h\u00e0n c\u1ee7a ch\u00fang t\u00f4i.<\/p>","protected":false},"excerpt":{"rendered":" Yes, alloy steel can be welded successfully, but specialized techniques are required to ensure strong, durable welds. Due to factors […]<\/p>","protected":false},"author":12,"featured_media":20855,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_eb_attr":"","rank_math_lock_modified_date":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[4308],"tags":[],"class_list":["post-20863","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-alloy-steel"],"acf":[],"_links":{"self":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/20863","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/comments?post=20863"}],"version-history":[{"count":0,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/posts\/20863\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media\/20855"}],"wp:attachment":[{"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/media?parent=20863"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/categories?post=20863"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/steelprogroup.com\/vi\/wp-json\/wp\/v2\/tags?post=20863"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\u1ee8ng d\u1ee5ng ph\u1ed5 bi\u1ebfn c\u1ee7a th\u00e9p h\u1ee3p kim h\u00e0n<\/strong><\/h3>
Cung c\u1ea5p th\u00e9p h\u1ee3p kim ch\u1ea5t l\u01b0\u1ee3ng cao v\u1edbi d\u1ecbch v\u1ee5 h\u00e0n t\u00f9y ch\u1ecdn<\/h2>