{"id":1312,"date":"2026-02-10T09:00:00","date_gmt":"2026-02-10T09:00:00","guid":{"rendered":"https:\/\/www.ykyvalve.com\/?p=1312"},"modified":"2026-03-03T07:16:25","modified_gmt":"2026-03-03T07:16:25","slug":"wc6-gate-valve-high-temperature-service","status":"publish","type":"post","link":"https:\/\/www.ykyvalve.com\/vi\/blog\/material\/wc6-gate-valve-high-temperature-service\/","title":{"rendered":"Van c\u1ed5ng WC6 d\u00f9ng cho c\u00e1c \u1ee9ng d\u1ee5ng nhi\u1ec7t \u0111\u1ed9 cao"},"content":{"rendered":"

Van c\u1ed5ng ASTM A217 WC6 l\u00e0 h\u1ee3p kim th\u1ea5p ch\u1ee9a crom v\u00e0 molypden gi\u00fap ng\u0103n ng\u1eeba s\u1ef1 xu\u1ed1ng c\u1ea5p c\u1ee7a kim lo\u1ea1i \u1edf nhi\u1ec7t \u0111\u1ed9 cao. Crom gi\u00fap ch\u1ed1ng oxy h\u00f3a v\u00e0 \u0103n m\u00f2n, trong khi molypden l\u00e0m t\u0103ng \u0111\u1ed9 b\u1ec1n r\u00e3o c\u1ee7a h\u1ee3p kim. <\/p>\n\n\n\n

H\u01b0\u1edbng d\u1eabn n\u00e0y gi\u1ea3i th\u00edch c\u00e1c l\u00fd do k\u1ef9 thu\u1eadt \u0111\u1ec3 l\u1ef1a ch\u1ecdn van c\u1ed5ng WC6, \u0111\u1eb7c bi\u1ec7t l\u00e0 nh\u1eefng \u01b0u \u0111i\u1ec3m c\u1ee7a n\u00f3 \u0111\u1ed1i v\u1edbi... d\u1ecbch v\u1ee5 nhi\u1ec7t \u0111\u1ed9 cao<\/a> Gi\u1ed1ng nh\u01b0 trong c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n v\u00e0 h\u00f3a d\u1ea7u. C\u00e1c k\u1ef9 s\u01b0 th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c van n\u00e0y nh\u1edd kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 cao trong th\u1eddi gian d\u00e0i v\u00e0 \u00e1p su\u1ea5t cao.\u00a0<\/p>\n\n\n\n

ASTM A217 <\/strong>Van c\u1ed5ng WC6 <\/strong>\u0110\u1eb7c t\u00ednh k\u1ef9 thu\u1eadt<\/strong><\/h2>\n\n\n\n
\"\"<\/a><\/figure>\n\n\n\n

Nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t cao <\/h3>\n\n\n\n

\u01afu \u0111i\u1ec3m ch\u00ednh c\u1ee7a van ASTM A217 WC6 l\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u01b0\u1ee3c \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 c\u1ef1c cao l\u00ean \u0111\u1ebfn 593\u00b0C v\u00e0 \u00e1p su\u1ea5t cao t\u1eeb c\u1ea5p 600 \u0111\u1ebfn 2500 v\u00e0 PN100 \u0111\u1ebfn PN420. Ch\u00fang ph\u00f9 h\u1ee3p v\u1edbi m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t nh\u01b0 \u0111\u01b0\u1eddng \u1ed1ng h\u01a1i n\u01b0\u1edbc v\u00e0 \u0111\u01b0\u1eddng \u1ed1ng d\u1eabn d\u1ea7u. <\/p>\n\n\n\n

    \n
  • Nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a: 550\u00b0C<\/li>\n\n\n\n
  • Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 thi\u1ebft k\u1ebf: -196\u00b0C \u0111\u1ebfn 593\u00b0C\u00a0<\/li>\n\n\n\n
  • \u00c1p su\u1ea5t \u0111\u1ecbnh m\u1ee9c: PN16 \u0111\u1ebfn PN420\u00a0<\/li>\n\n\n\n
  • C\u1ea5p \u00e1p su\u1ea5t: 150LB \u0111\u1ebfn 2500LB\u00a0<\/li>\n<\/ul>\n\n\n\n

    D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3ng so s\u00e1nh r\u00f5 r\u00e0ng v\u1ec1 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c van n\u00e0y v\u1edbi c\u00e1c lo\u1ea1i van c\u1ed5ng b\u1eb1ng th\u00e9p h\u1ee3p kim kh\u00e1c: <\/p>\n\n\n\n

    C\u00e1c y\u1ebfu t\u1ed1<\/td>WC9<\/td>WC9<\/td><\/tr>
    Nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a <\/td>538\u00b0C<\/td>595\u00b0C<\/td><\/tr>
    Kh\u1ea3 n\u0103ng ch\u1ed1ng bi\u1ebfn d\u1ea1ng d\u1ebbo <\/td>Th\u1ea5p h\u01a1n WC9<\/td>Cao c\u1ea5p h\u01a1n v\u00e0 \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng l\u00e2u d\u00e0i.<\/td><\/tr>
    T\u00ednh ph\u00f9 h\u1ee3p c\u1ee7a \u1ee9ng d\u1ee5ng <\/td>D\u1ecbch v\u1ee5 d\u01b0\u1edbi t\u1edbi h\u1ea1n <\/td>\u1ee8ng d\u1ee5ng c\u1ef1c k\u1ef3 quan tr\u1ecdng<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    Trong khi \u0111\u00f3, vi\u1ec7c so s\u00e1nh WC6 v\u1edbi WCB c\u0169ng r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p. WCB l\u00e0 lo\u1ea1i th\u00e9p carbon ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho m\u1ee5c \u0111\u00edch chung v\u00e0 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong m\u00f4i tr\u01b0\u1eddng l\u00ean \u0111\u1ebfn 425\u00b0C (800\u00b0F). N\u00f3 c\u0169ng ti\u1ebft ki\u1ec7m chi ph\u00ed h\u01a1n khi s\u1eed d\u1ee5ng v\u1edbi n\u01b0\u1edbc ho\u1eb7c d\u1ea7u \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n. Ng\u01b0\u1ee3c l\u1ea1i, WC6 l\u00fd t\u01b0\u1edfng khi h\u1ec7 th\u1ed1ng s\u1eed d\u1ee5ng h\u01a1i n\u01b0\u1edbc si\u00eau nhi\u1ec7t ho\u1eb7c kh\u00ed \u1edf nhi\u1ec7t \u0111\u1ed9 cao.<\/p>\n\n\n\n

    \u0110\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc<\/h3>\n\n\n\n

    Van ASTM A217 WC6 c\u0169ng r\u1ea5t b\u1ec1n v\u00e0 kh\u00f4ng d\u1ec5 b\u1ecb v\u1ee1. V\u1eadt li\u1ec7u n\u00e0y c\u00f3 gi\u1edbi h\u1ea1n ch\u1ea3y \u00edt nh\u1ea5t 40 ksi (275 MPa). \u0110\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a ch\u00fang n\u1eb1m trong kho\u1ea3ng t\u1eeb 70 \u0111\u1ebfn 95 ksi (485-655 MPa), cho ph\u00e9p ch\u00fang ch\u1ecbu \u0111\u01b0\u1ee3c t\u1ea3i tr\u1ecdng n\u1eb7ng v\u00e0 s\u1ef1 thay \u0111\u1ed5i \u00e1p su\u1ea5t \u0111\u1ed9t ng\u1ed9t. <\/p>\n\n\n\n

    H\u1ee3p kim WC6 gi\u00fap van c\u00f3 \u0111\u1ed9 b\u1ec1n cao v\u00e0 tu\u1ed5i th\u1ecd d\u00e0i, l\u00fd t\u01b0\u1edfng cho nh\u1eefng n\u01a1i m\u00e0 an to\u00e0n l\u00e0 y\u1ebfu t\u1ed1 t\u1ed1i quan tr\u1ecdng. <\/p>\n\n\n\n

    T\u00e0i s\u1ea3n<\/td>S\u1ef1 mi\u00eau t\u1ea3<\/td><\/tr>
    \u0110\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc <\/td>\u0110\u1ed9 b\u1ec1n v\u00e0 s\u1ee9c ch\u1ecbu l\u1ef1c v\u01b0\u1ee3t tr\u1ed9i, r\u1ea5t c\u1ea7n thi\u1ebft cho c\u00e1c \u1ee9ng d\u1ee5ng \u00e1p su\u1ea5t cao. <\/td><\/tr>
    Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n<\/td>\u0110\u01b0\u1ee3c t\u0103ng c\u01b0\u1eddng b\u1edfi molypden, ch\u00fang tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n. <\/td><\/tr>
    Kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t<\/td>C\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 l\u00ean \u0111\u1ebfn 593\u00b0C, th\u00edch h\u1ee3p cho ng\u00e0nh c\u00f4ng nghi\u1ec7p d\u1ea7u kh\u00ed v\u00e0 h\u01a1i n\u01b0\u1edbc. <\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n