{"id":3106,"date":"2020-04-10T09:52:55","date_gmt":"2020-04-10T09:52:55","guid":{"rendered":"https:\/\/thuvienxaydung.com.vn\/?p=3106"},"modified":"2020-12-22T08:13:19","modified_gmt":"2020-12-22T08:13:19","slug":"tieu-chuan-gia-cong-ket-cau-thep","status":"publish","type":"post","link":"https:\/\/tailieuxaydung.net\/?p=3106","title":{"rendered":"Ti\u00eau chu\u1ea9n gia c\u00f4ng k\u1ebft c\u1ea5u th\u00e9p"},"content":{"rendered":"

S\u1ea3n xu\u1ea5t nh\u00e0 th\u00e9p ti\u1ec1n ch\u1ebf trong nh\u00e0 x\u01b0\u1edfng l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh g\u1ed3m nhi\u1ec1u c\u00f4ng \u0111o\u1ea1n n\u1ed1i ti\u1ebfp nhau, ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a s\u1ea3n ph\u1ea9m ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a t\u1eebng giai \u0111o\u1ea1n gia c\u00f4ng.<\/p>\n

S\u1ea3n xu\u1ea5t nh\u00e0 th\u00e9p ti\u1ec1n ch\u1ebf trong nh\u00e0 x\u01b0\u1edfng l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh g\u1ed3m nhi\u1ec1u c\u00f4ng \u0111o\u1ea1n n\u1ed1i ti\u1ebfp nhau, ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a s\u1ea3n ph\u1ea9m ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a t\u1eebng giai \u0111o\u1ea1n gia c\u00f4ng.<\/p>\n

T\u1ea1i nh\u00e0 m\u00e1y c\u1ee7a\u00a0 VSTEEL, ch\u00fang t\u00f4i c\u0103n c\u1ee9 v\u00e0o ti\u00eau chu\u1ea9n\u00a0ti\u00eau chu\u1ea9n\u00a0\u201cK\u1ebft c\u1ea5u th\u00e9p – Gia c\u00f4ng, l\u1eafp r\u00e1p, nghi\u1ec7m thu \u2013 Y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt \u201d<\/strong><\/em>\u00a0TCVN 170:2007, t\u1eeb \u0111\u00f3\u00a0 t\u1ea1o m\u1ed9t\u00a0b\u1ed9 quy chu\u1ea9n ri\u00eang \u0111\u1ec3 nghi\u1ec7m thu t\u1eebng giai \u0111o\u1ea1n s\u1ea3n xu\u1ea5t, b\u1ed9 quy chu\u1ea9n n\u00e0y \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c c\u00e1c y\u00eau c\u1ea7u c\u1ee7a ti\u00eau chu\u1ea9n Vi\u1ec7t Nam c\u0169ng nh\u01b0 c\u00e1c ti\u00eau chu\u1ea9n n\u01b0\u1edbc ngo\u00e0i, t\u1eeb \u0111\u00f3\u00a0 t\u1ea1o ra c\u00e1c s\u1ea3n ph\u1ea9m v\u1edbi ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t nh\u1ea5t.<\/p>\n

Quy tr\u00ecnh s\u1ea3n xu\u1ea5t k\u1ebft c\u1ea5u th\u00e9p<\/h2>\n

T\u1ea1i nh\u00e0 m\u00e1y c\u1ee7a Vsteel, quy tr\u00ecnh s\u1ea3n xu\u1ea5t k\u1ebft c\u1ea5u th\u00e9p \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n theo quy tr\u00ecnh:<\/p>\n

    \n
  1. C\u1eaft ph\u00f4i th\u00e9p<\/li>\n
  2. G\u00e1 c\u1ea5u ki\u1ec7n<\/li>\n
  3. H\u00e0n t\u1ef1 \u0111\u1ed9ng<\/li>\n
  4. N\u1eafn th\u1eb3ng c\u1ea5u ki\u1ec7n<\/li>\n
  5. H\u00e0n b\u1ea3n m\u00e3, s\u01b0\u1eddn gia c\u01b0\u1eddng, khoan l\u1ed7<\/li>\n
  6. Phun bi\/ phun c\u00e1t v\u00e0 v\u1ec7 sinh b\u1ec1 m\u1eb7t c\u1ea5u ki\u1ec7n<\/li>\n
  7. S\u01a1n ho\u00e0n thi\u1ec7n<\/li>\n<\/ol>\n

    Ch\u1ea5t l\u01b0\u1ee3ng \u0111\u01b0\u1eddng h\u00e0n<\/h2>\n

    Ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt h\u00e0n<\/h3>\n
      \n
    • Ch\u1ecdn ch\u1ebf \u0111\u1ed9 h\u00e0n cao cho b\u1ea3o \u0111\u1ea9m h\u00e0n ng\u1ea5u: h\u1ec7 s\u1ed1 ng\u1ea5u jn = b \/ h ph\u1ea3i kh\u00f4ng nh\u1ecf h\u01a1n 1,3 \u0111\u1ed1i v\u1edbi m\u1ed1i h\u00e0n g\u00f3c v\u00e0 kh\u00f4ng nh\u1ecf h\u01a1n 1,5 \u0111\u1ed1i v\u1edbi m\u1ed1i h\u00e0n \u0111\u1ed1i \u0111\u1ea7u.<\/li>\n
    • Khi h\u00e0n k\u1ebft c\u1ea5u l\u00e0m b\u1eb1ng th\u00e9p d\u00e0y tr\u00ean 20 mm ph\u1ea3i d\u00f9ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ec3 gi\u1ea3m b\u1edbt nhi\u1ec7t c\u1ee7a m\u1ed1i h\u00e0n \u0111\u1ec3 h\u1ea1n ch\u1ebf cong v\u00eanh do nhi\u1ec7t, gi\u1ea3m t\u1ed1c \u0111\u1ed9 ngu\u1ed9i v\u00ed d\u1ee5 h\u00e0n b\u1eadc thang, h\u00e0n t\u1eeb gi\u1eefa \u0111\u01b0\u1eddng h\u00e0n ra hai ph\u00eda.<\/li>\n
    • Ngo\u00e0i ra, k\u1ef9 s\u01b0 c\u1ea7n ch\u00fa \u0111\u1ebfn vi\u1ec7c chu\u1ea9n b\u1ecb m\u1eb7t h\u00e0n nh\u01b0 l\u00e0m s\u1ea1ch, t\u1ea9y h\u1ebft x\u1ec9 v\u00e0 nh\u1eefng ch\u1ed7 ch\u00e1y khuy\u1ebft, v.v.<\/li>\n<\/ul>\n

      C\u00e1c ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra \u0111o \u0111\u1ea1c m\u1ed1i h\u00e0n<\/h3>\n
        \n
      • Ki\u1ec3m tra b\u1eb1ng m\u1eaft th\u01b0\u1eddng: g\u1ed3m vi\u1ec7c xem x\u00e9t ch\u1ea5t l\u01b0\u1ee3ng b\u00ean ngo\u00e0i, \u0111\u01b0\u1eddng h\u00e0n c\u00f3 \u0111\u1ee7 k\u00edch th\u01b0\u1edbc trong ph\u1ea1m vi, chi\u1ec1u cao \u0111\u01b0\u1eddng h\u00e0n c\u00f3 \u0111\u00fang y\u00eau c\u1ea7u c\u1ee7a b\u1ea3n v\u1ebd k\u1ef9 thu\u1eadt? K\u00edch th\u01b0\u1edbc c\u1ee7a m\u1ed1i h\u00e0n theo quy \u0111\u1ecbnh c\u1ee7a thi\u1ebft k\u1ebf nh\u01b0ng kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 gi\u00e1 tr\u1ecb l\u1edbn nh\u1ea5t v\u00e0 dung sai cho trong TCVN 1691-75; m\u1ed1i h\u00e0n kh\u00f4ng b\u1ecb n\u1ee9t, r\u1ed7; C\u00e1c ch\u1ed7 l\u00f5m tr\u00ean ti\u1ebft di\u1ec7n ph\u1ea3i \u0111\u01b0\u1ee3c h\u00e0n \u0111\u1ea7y.<\/li>\n
      • Ki\u1ec3m tra b\u1eb1ng b\u1ed9t t\u1eeb ho\u1eb7c b\u1eb1ng ch\u1ea5t l\u1ecfng th\u1ea5m nh\u01b0 d\u00f9ng d\u1ea7u ho\u1ea3 t\u1ea9m l\u00ean m\u1eb7t m\u1ed1i h\u00e0n v\u00e0 n\u01b0\u1edbc ph\u1ea5n \u0111\u1ec3 ph\u00e1t hi\u1ec7n v\u1ebft d\u1ea7u loang; d\u00f9ng n\u01b0\u1edbc x\u00e0 ph\u00f2ng b\u01a1m b\u1eb1ng kh\u00ed n\u00e9n m\u1ed9t ph\u00eda v\u00e0 ph\u00e1t hi\u1ec7n b\u1ecdt kh\u00ed x\u00e0 ph\u00f2ng \u1edf ph\u00eda kia.<\/li>\n
      • Ki\u1ec3m tra kh\u00f4ng ph\u00e1 ho\u1ea1i: g\u1ed3m m\u1ed9t lo\u1ea1t c\u00e1c ph\u01b0\u01a1ng ph\u00e1p v\u1eadt l\u00ed nh\u01b0 ki\u1ec3m tra b\u1eb1ng si\u00eau \u00e2m, ki\u1ec3m tra b\u1eb1ng tia X, ki\u1ec3m\u00a0 tra macro \u0111\u01b0\u1eddng h\u00e0n \u0111\u1ec3 ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c c\u00e1c ch\u1ed7 kh\u00f4ng li\u00ean t\u1ee5c b\u00ean trong kim lo\u1ea1i h\u00e0n. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1edfi c\u00e1c ph\u00f2ng Las chuy\u00ean ng\u00e0nh, theo s\u1ef1 \u0111\u1eb7t h\u00e0ng c\u1ee7a kh\u00e1ch h\u00e0ng.<\/li>\n
      • Nh\u1eefng m\u1ed1i h\u00e0n b\u1ecb l\u1ed7i khi thi c\u00f4ng ph\u1ea3i t\u1ea9y b\u1ecf b\u1eb1ng m\u00e1y c\u1eaft, m\u00e0i ho\u1eb7c th\u1ed5i b\u1eb1ng \u00f4xy, kh\u00f4ng \u0111\u01b0\u1ee3c x\u00e2m ph\u1ea1m v\u00e0o th\u00e9p c\u01a1 b\u1ea3n. L\u00e0m s\u1ea1ch b\u1ec1 m\u1eb7t tr\u01b0\u1edbc khi h\u00e0n l\u1ea1i. Sau khi s\u1eeda ch\u1eefa xong, l\u1ea1i ph\u1ea3i th\u1ef1c hi\u1ec7n l\u1ea1i vi\u1ec7c ki\u1ec3m tra v\u1edbi c\u00f9ng k\u0129 thu\u1eadt v\u00e0 ti\u00eau ch\u00ed.<\/li>\n
      • Ki\u1ec3m tra k\u1ebft c\u1ea5u h\u00e0n. Khi h\u00e0n xong c\u1ea5u ki\u1ec7n, lu\u00f4n lu\u00f4n c\u00f3 bi\u1ebfn h\u00ecnh h\u00e0n l\u00e0m c\u1ea5u ki\u1ec7n b\u1ecb cong v\u00eanh. Vi\u1ec7c \u0111\u1ea7u ti\u00ean l\u00e0 d\u00f9ng m\u1eaft th\u01b0\u1eddng ki\u1ec3m tra \u0111\u1ed9 cong v\u00eanh c\u1ee7a k\u1ebft c\u1ea5u v\u00e0 ph\u1ea3i n\u1eafn s\u1eeda l\u1ea1i cho th\u1eb3ng.<\/li>\n<\/ul>\n

        Kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c tim l\u1ed7 v\u00e0 c\u00e1c m\u00e3 li\u00ean k\u1ebft<\/h2>\n

        Kho\u1ea3ng c\u00e1ch\u00a0 c\u00e1c\u00a0 tim l\u1ed7 \u0111\u01b0\u1ee3c ti\u00eau chu\u1ea9n quy \u0111\u1ecbnh r\u00f5, ph\u1ee5 thu\u1ed9c v\u00e0o ph\u01b0\u01a1ng ph\u00e1p gia c\u00f4ng:<\/p>\n

          \n
        • Khi thi c\u00f4ng k\u1ebft c\u1ea5u th\u00e9p \u0111\u01a1n chi\u1ebfc v\u00e0 \u0111\u01b0\u1ee3c t\u1ed5 h\u1ee3p theo \u0111\u01b0\u1eddng k\u1ebb \u0111\u00e3 v\u1ea1ch<\/li>\n
        • Khi khoan theo d\u01b0\u1ee1ng khoan<\/li>\n<\/ul>\n

          TCVN 170:2007 quy \u0111\u1ecbnh:<\/p>\n

            \n
          • Chi\u1ec1u d\u00e0i c\u1ea5u ki\u1ec7n c\u00f3 th\u1ec3 sai s\u1ed1 : theo TCXD 1mm \u0111\u1ebfn 5 mm tu\u1ef3 theo chi\u1ec1u d\u00e0i c\u1ea5u ki\u1ec7n v\u00e0 ph\u01b0\u01a1ng ph\u00e1p gia c\u00f4ng;<\/li>\n
          • \u0110\u1ed9 th\u1eb3ng c\u1ee7a thanh th\u00e9p h\u00ecnh l\u00e0 0,001 L nh\u01b0ng kh\u00f4ng qu\u00e1 10 mm<\/li>\n
          • Sai l\u1ec7ch v\u1ecb tr\u00ed gi\u1eefa c\u00e1c l\u1ed7 v\u1edbi nhau l\u00e0 1,5 mm<\/li>\n<\/ul>\n

            \"ti\u00eau<\/p>\n

            \"ti\u00eau<\/p>\n

            B\u1ea3ng 7: Sai l\u1ec7ch cho ph\u00e9p\u00a0 v\u1ec1 k\u00edch th\u01b0\u1edbc v\u00e0 chi\u1ec1u d\u00e0i theo TCVN 170:2007<\/em><\/p>\n

            V\u1edbi gia \u0111o\u1ea1n ho\u00e0n thi\u1ec7n ch\u00fang t\u00f4i tham kh\u1ea3o c\u00e1c ti\u00eau chu\u1ea9n nh\u01b0 TCVN 9377-1:2012. C\u00f4ng t\u00e1c ho\u00e0n thi\u1ec7n trong x\u00e2y d\u1ef1ng \u2013 Thi c\u00f4ng v\u00e0 nghi\u1ec7m thu.<\/p>\n

            Qu\u00e1 tr\u00ecnh gia c\u00f4ng c\u1ea5u ki\u1ec7n trong nh\u00e0 x\u01b0\u1edfng c\u00e0ng ch\u00ednh x\u00e1c gi\u00fap qu\u00e1 tr\u00ecnh thi c\u00f4ng l\u1eafp d\u1ef1ng \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng c\u0169ng nh\u01b0 ti\u1ebfn \u0111\u1ed9. \u0110\u1ec3 t\u00ecm hi\u1ec3u v\u1ec1 qu\u00e1 tr\u00ecnh gia c\u00f4ng k\u1ebft c\u1ea5u th\u00e9p trong nh\u00e0 x\u01b0\u1edfng, c\u00e1c b\u1ea1n tham kh\u1ea3o th\u00eam b\u00e0i:<\/b><\/p>\n","protected":false},"excerpt":{"rendered":"

            S\u1ea3n xu\u1ea5t nh\u00e0 th\u00e9p ti\u1ec1n ch\u1ebf trong nh\u00e0 x\u01b0\u1edfng l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh g\u1ed3m nhi\u1ec1u c\u00f4ng \u0111o\u1ea1n n\u1ed1i ti\u1ebfp nhau, ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a s\u1ea3n ph\u1ea9m ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a t\u1eebng giai \u0111o\u1ea1n gia c\u00f4ng. S\u1ea3n xu\u1ea5t nh\u00e0 th\u00e9p ti\u1ec1n ch\u1ebf trong nh\u00e0 x\u01b0\u1edfng l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh g\u1ed3m nhi\u1ec1u c\u00f4ng…<\/p>\n","protected":false},"author":1,"featured_media":3398,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[42],"tags":[],"class_list":["post-3106","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tieu-chuan-xay-dung"],"_links":{"self":[{"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=\/wp\/v2\/posts\/3106","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3106"}],"version-history":[{"count":4,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=\/wp\/v2\/posts\/3106\/revisions"}],"predecessor-version":[{"id":5967,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=\/wp\/v2\/posts\/3106\/revisions\/5967"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=\/wp\/v2\/media\/3398"}],"wp:attachment":[{"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3106"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3106"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tailieuxaydung.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3106"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}