{"id":5562,"date":"2016-03-22T18:48:11","date_gmt":"2016-03-22T11:48:11","guid":{"rendered":"https:\/\/www.baohoxanh.com\/blog\/?p=5562"},"modified":"2026-09-02T02:45:27","modified_gmt":"2026-09-01T19:45:27","slug":"day-du-sieu-ben-sieu-chat-luong-gia-cuc-ky-tot","status":"publish","type":"post","link":"https:\/\/www.baohoxanh.com\/blog\/day-du-sieu-ben-sieu-chat-luong-gia-cuc-ky-tot\/","title":{"rendered":"T\u1ea3i Tr\u1ecdng K\u00e9o \u0110\u1ee9t D\u00e2y D\u00f9 – C\u00e1ch \u0110\u1ecdc Th\u00f4ng S\u1ed1 V\u00e0 H\u1ec7 S\u1ed1 An To\u00e0n"},"content":{"rendered":"

Con s\u1ed1 t\u1ea3i tr\u1ecdng k\u00e9o \u0111\u1ee9t d\u00e2y d\u00f9<\/strong> in tr\u00ean nh\u00e3n l\u00e0 th\u1ee9 hay b\u1ecb d\u00f9ng sai nh\u1ea5t khi mua v\u00e0 khi thi c\u00f4ng. N\u00f3 kh\u00f4ng ph\u1ea3i m\u1ee9c t\u1ea3i \u0111\u01b0\u1ee3c ph\u00e9p mang, v\u00e0 c\u0169ng kh\u00f4ng c\u00f2n \u0111\u00fang sau v\u00e0i th\u00e1ng d\u00e2y n\u1eb1m ngo\u00e0i n\u1eafng. B\u00e0i vi\u1ebft \u0111i \u0111\u00fang m\u1ed9t tr\u1ee5c: con s\u1ed1 \u1ea5y \u0111o trong \u0111i\u1ec1u ki\u1ec7n n\u00e0o, kh\u00e1c t\u1ea3i tr\u1ecdng l\u00e0m vi\u1ec7c ra sao, h\u1ec7 s\u1ed1 an to\u00e0n ch\u1ecdn theo t\u00ecnh hu\u1ed1ng n\u00e0o, n\u00fat th\u1eaft v\u00e0 tu\u1ed5i d\u00e2y l\u1ea5y \u0111i bao nhi\u00eau, v\u00e0 ranh gi\u1edbi tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t.<\/p>\n

T\u1ea3i Tr\u1ecdng K\u00e9o \u0110\u1ee9t D\u00e2y D\u00f9 L\u00e0 Con S\u1ed1 \u0110o Trong \u0110i\u1ec1u Ki\u1ec7n N\u00e0o<\/h2>\n

D\u00e2y d\u00f9 khi mua th\u01b0\u1eddng \u0111i k\u00e8m th\u00f4ng s\u1ed1 t\u1ea3i tr\u1ecdng k\u00e9o \u0111\u1ee9t do nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f4ng b\u1ed1. \u0110\u00e2y l\u00e0 l\u1ef1c k\u00e9o t\u1ed1i \u0111a m\u00e0 s\u1ee3i d\u00e2y ch\u1ecbu \u0111\u01b0\u1ee3c tr\u01b0\u1edbc khi \u0111\u1ee9t, \u0111o trong \u0111i\u1ec1u ki\u1ec7n th\u1eed nghi\u1ec7m ti\u00eau chu\u1ea9n v\u1edbi d\u00e2y m\u1edbi, ch\u01b0a qua s\u1eed d\u1ee5ng. N\u1ebfu ch\u1ec9 nh\u00ecn con s\u1ed1 n\u00e0y r\u1ed3i quy \u0111\u1ed5i tr\u1ef1c ti\u1ebfp th\u00e0nh t\u1ea3i tr\u1ecdng \u0111\u01b0\u1ee3c ph\u00e9p mang trong c\u00f4ng vi\u1ec7c h\u00e0ng ng\u00e0y, r\u1ee7i ro \u0111\u1ee9t d\u00e2y s\u1ebd cao h\u01a1n nhi\u1ec1u so v\u1edbi con s\u1ed1 tr\u00ean nh\u00e3n th\u1ec3 hi\u1ec7n.<\/p>\n

Ba \u0111i\u1ec1u ki\u1ec7n c\u1ee7a ph\u00e9p th\u1eed \u0111\u00e1ng nh\u1edb. D\u00e2y \u0111\u01b0\u1ee3c k\u00e9o th\u1eb3ng, kh\u00f4ng th\u1eaft n\u00fat, kh\u00f4ng v\u1eaft qua c\u1ea1nh. L\u1ef1c t\u0103ng \u0111\u1ec1u ch\u1ee9 kh\u00f4ng gi\u1eadt. V\u00e0 m\u1eabu th\u1eed l\u00e0 d\u00e2y m\u1edbi xu\u1ea5t x\u01b0\u1edfng. Ba \u0111i\u1ec1u ki\u1ec7n \u1ea5y g\u1ea7n nh\u01b0 kh\u00f4ng bao gi\u1edd xu\u1ea5t hi\u1ec7n \u0111\u1ed3ng th\u1eddi \u1edf hi\u1ec7n tr\u01b0\u1eddng, n\u00ean kho\u1ea3ng c\u00e1ch gi\u1eefa ph\u00f2ng th\u1eed v\u00e0 c\u00f4ng tr\u01b0\u1eddng lu\u00f4n t\u1ed3n t\u1ea1i.<\/p>\n

V\u00ec v\u1eady con s\u1ed1 k\u00e9o \u0111\u1ee9t n\u00ean \u0111\u01b0\u1ee3c coi l\u00e0 \u0111i\u1ec3m xu\u1ea5t ph\u00e1t \u0111\u1ec3 t\u00ednh to\u00e1n, kh\u00f4ng ph\u1ea3i k\u1ebft lu\u1eadn. M\u1ecdi ph\u1ea7n c\u00f2n l\u1ea1i c\u1ee7a b\u00e0i l\u00e0 c\u00e1c kho\u1ea3n b\u1ecb tr\u1eeb \u0111i t\u1eeb \u0111i\u1ec3m xu\u1ea5t ph\u00e1t \u1ea5y.<\/p>\n

Ph\u00e2n Bi\u1ec7t T\u1ea3i Tr\u1ecdng K\u00e9o \u0110\u1ee9t V\u00e0 T\u1ea3i Tr\u1ecdng L\u00e0m Vi\u1ec7c An To\u00e0n<\/h2>\n

T\u1ea3i tr\u1ecdng l\u00e0m vi\u1ec7c an to\u00e0n, th\u01b0\u1eddng vi\u1ebft t\u1eaft l\u00e0 WLL, l\u00e0 m\u1ee9c t\u1ea3i t\u1ed1i \u0111a \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb s\u1eed d\u1ee5ng th\u1ef1c t\u1ebf, lu\u00f4n th\u1ea5p h\u01a1n nhi\u1ec1u so v\u1edbi t\u1ea3i tr\u1ecdng k\u00e9o \u0111\u1ee9t. WLL \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng c\u00e1ch l\u1ea5y t\u1ea3i tr\u1ecdng k\u00e9o \u0111\u1ee9t chia cho h\u1ec7 s\u1ed1 an to\u00e0n. Hai th\u00f4ng s\u1ed1 n\u00e0y d\u1ec5 b\u1ecb nh\u1ea7m l\u1eabn v\u00ec c\u00f9ng xu\u1ea5t hi\u1ec7n tr\u00ean b\u1ea3ng th\u00f4ng s\u1ed1 s\u1ea3n ph\u1ea9m, nh\u01b0ng ch\u1ec9 WLL m\u1edbi l\u00e0 con s\u1ed1 n\u00ean d\u00f9ng \u0111\u1ec3 t\u00ednh to\u00e1n t\u1ea3i tr\u1ecdng cho c\u00f4ng vi\u1ec7c th\u1ef1c t\u1ebf.<\/p>\n

Tr\u00ean thi\u1ebft b\u1ecb n\u00e2ng h\u1ea1 chuy\u00ean d\u1ee5ng, m\u1ee9c t\u1ea3i cho ph\u00e9p b\u1eaft bu\u1ed9c ph\u1ea3i \u0111\u01b0\u1ee3c d\u1eadp ho\u1eb7c g\u1eafn nh\u00e3n c\u1ed1 \u0111\u1ecbnh, c\u00f2n \u0111\u1ecdc \u0111\u01b0\u1ee3c, v\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c d\u00f9ng khi nh\u00e3n \u0111\u00e3 m\u1ea5t. Nguy\u00ean t\u1eafc \u0111\u00f3 n\u1eb1m trong quy \u0111\u1ecbnh v\u1ec1 thi\u1ebft b\u1ecb n\u00e2ng h\u1ea1 v\u1eadt li\u1ec7u c\u1ee7a c\u01a1 quan qu\u1ea3n l\u00fd an to\u00e0n lao \u0111\u1ed9ng Hoa K\u1ef3, c\u00f4ng b\u1ed1 t\u1ea1i m\u1ee5c 1926.251<\/a>. D\u00e2y d\u00f9 b\u00e1n theo cu\u1ed9n \u1edf th\u1ecb tr\u01b0\u1eddng ph\u1ed5 th\u00f4ng kh\u00f4ng thu\u1ed9c nh\u00f3m \u1ea5y, n\u00ean n\u00f3 kh\u00f4ng mang nh\u00e3n t\u1ea3i cho ph\u00e9p v\u00e0 c\u0169ng kh\u00f4ng \u0111\u01b0\u1ee3c d\u00f9ng thay th\u1ebf.<\/p>\n

C\u00e1ch x\u1eed l\u00fd g\u1ecdn khi b\u00e1o gi\u00e1 ch\u1ec9 ghi m\u1ed9t con s\u1ed1 duy nh\u1ea5t: h\u1ecfi th\u1eb3ng \u0111\u00f3 l\u00e0 k\u00e9o \u0111\u1ee9t hay t\u1ea3i l\u00e0m vi\u1ec7c, v\u00e0 y\u00eau c\u1ea7u ghi r\u00f5 v\u00e0o \u0111\u01a1n h\u00e0ng. Ch\u00eanh l\u1ec7ch gi\u1eefa hai kh\u00e1i ni\u1ec7m c\u00f3 th\u1ec3 g\u1ea5p nhi\u1ec1u l\u1ea7n.<\/p>\n

\"D\u00e2y<\/p>\n

H\u1ec7 S\u1ed1 An To\u00e0n Ch\u1ecdn Theo T\u00ecnh Hu\u1ed1ng: K\u00e9o, Treo Hay C\u00f3 Ng\u01b0\u1eddi B\u00ean D\u01b0\u1edbi<\/h2>\n

H\u1ec7 s\u1ed1 an to\u00e0n l\u00e0 t\u1ef7 l\u1ec7 gi\u1eefa t\u1ea3i tr\u1ecdng k\u00e9o \u0111\u1ee9t v\u00e0 t\u1ea3i tr\u1ecdng l\u00e0m vi\u1ec7c cho ph\u00e9p, d\u00f9ng \u0111\u1ec3 b\u00f9 \u0111\u1eafp cho c\u00e1c y\u1ebfu t\u1ed1 kh\u00f4ng th\u1ec3 l\u01b0\u1eddng tr\u01b0\u1edbc nh\u01b0 hao m\u00f2n theo th\u1eddi gian, l\u1ef1c gi\u1eadt \u0111\u1ed9t ng\u1ed9t ho\u1eb7c sai s\u1ed1 trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t. Con s\u1ed1 n\u00e0y kh\u00f4ng ph\u1ea3i m\u1ed9t h\u1eb1ng s\u1ed1 d\u00f9ng chung m\u00e0 thay \u0111\u1ed5i theo m\u1ee9c \u0111\u1ed9 nghi\u00eam tr\u1ecdng c\u1ee7a h\u1eadu qu\u1ea3 n\u1ebfu d\u00e2y \u0111\u1ee9t.<\/p>\n

Ba t\u00ecnh hu\u1ed1ng n\u00ean t\u00e1ch b\u1ea1ch khi t\u00ednh. K\u00e9o v\u1eadt tr\u00ean m\u1eb7t ph\u1eb3ng<\/strong> l\u00e0 nh\u1eb9 nh\u1ea5t: n\u1ebfu d\u00e2y \u0111\u1ee9t, v\u1eadt d\u1eebng l\u1ea1i t\u1ea1i ch\u1ed7 v\u00e0 h\u1eadu qu\u1ea3 th\u01b0\u1eddng ch\u1ec9 l\u00e0 h\u1ecfng h\u00e0ng. Treo v\u1eadt l\u01a1 l\u1eedng<\/strong> n\u1eb7ng h\u01a1n: v\u1eadt r\u01a1i t\u1ef1 do v\u00e0 t\u00edch th\u00eam \u0111\u1ed9ng n\u0103ng, n\u00ean bi\u00ean d\u1ef1 ph\u00f2ng ph\u1ea3i r\u1ed9ng h\u01a1n h\u1eb3n. C\u00f3 ng\u01b0\u1eddi trong v\u00f9ng r\u01a1i<\/strong> l\u00e0 t\u00ecnh hu\u1ed1ng kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p ch\u1ea5p nh\u1eadn r\u1ee7i ro: khu v\u1ef1c b\u00ean d\u01b0\u1edbi ph\u1ea3i r\u00e0o ch\u1eafn v\u00e0 c\u1ea5m ng\u01b0\u1eddi, ch\u1ee9 kh\u00f4ng gi\u1ea3i quy\u1ebft b\u1eb1ng c\u00e1ch t\u0103ng h\u1ec7 s\u1ed1 an to\u00e0n.<\/p>\n

Trong ng\u00e0nh n\u00e2ng h\u1ea1 v\u00e0 r\u00e0ng bu\u1ed9c h\u00e0ng h\u00f3a n\u00f3i chung, h\u1ec7 s\u1ed1 an to\u00e0n t\u1ed1i thi\u1ec3u ph\u1ed5 bi\u1ebfn th\u01b0\u1eddng \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb v\u00e0o kho\u1ea3ng n\u0103m l\u1ea7n tr\u1edf l\u00ean, trong khi c\u00e1c \u1ee9ng d\u1ee5ng li\u00ean quan \u0111\u1ebfn an to\u00e0n t\u00ednh m\u1ea1ng con ng\u01b0\u1eddi nh\u01b0 c\u1ee9u h\u1ed9, ch\u1ed1ng r\u01a1i ng\u00e3 th\u01b0\u1eddng \u0111\u00f2i h\u1ecfi h\u1ec7 s\u1ed1 cao h\u01a1n \u0111\u00e1ng k\u1ec3, thu\u1ed9c v\u1ec1 nh\u00f3m thi\u1ebft b\u1ecb chuy\u00ean d\u1ee5ng \u0111\u01b0\u1ee3c ki\u1ec3m \u0111\u1ecbnh ri\u00eang ch\u1ee9 kh\u00f4ng d\u00f9ng d\u00e2y d\u00f9 th\u00f4ng th\u01b0\u1eddng.<\/p>\n

V\u1edbi d\u00e2y d\u00f9 d\u00f9ng cho m\u1ee5c \u0111\u00edch bu\u1ed9c, c\u1ed1 \u0111\u1ecbnh v\u1eadt d\u1ee5ng kh\u00f4ng ch\u1ecbu t\u1ea3i tr\u1ecdng con ng\u01b0\u1eddi, ng\u01b0\u1eddi d\u00f9ng n\u00ean t\u1ef1 c\u1ed9ng th\u00eam bi\u00ean an to\u00e0n r\u1ed9ng h\u01a1n con s\u1ed1 t\u1ed1i thi\u1ec3u tr\u00ean, thay v\u00ec c\u1ed1 g\u1eafng t\u1eadn d\u1ee5ng t\u1ed1i \u0111a t\u1ea3i tr\u1ecdng ghi tr\u00ean nh\u00e3n, v\u00ec d\u00e2y d\u00f9 ph\u1ed5 th\u00f4ng th\u01b0\u1eddng kh\u00f4ng \u0111\u01b0\u1ee3c ki\u1ec3m \u0111\u1ecbnh \u0111\u1ecbnh k\u1ef3 nh\u01b0 d\u00e2y chuy\u00ean d\u1ee5ng.<\/p>\n

N\u00fat Th\u1eaft V\u00e0 M\u1ed1i N\u1ed1i L\u00e0m M\u1ea5t Bao Nhi\u00eau S\u1ee9c Ch\u1ecbu T\u1ea3i<\/h2>\n

B\u1ea5t k\u1ef3 n\u00fat th\u1eaft n\u00e0o tr\u00ean d\u00e2y c\u0169ng l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c so v\u1edbi d\u00e2y th\u1eb3ng kh\u00f4ng th\u1eaft, do s\u1ee3i b\u1ecb b\u1ebb g\u00f3c \u0111\u1ed9t ng\u1ed9t t\u1ea1i v\u1ecb tr\u00ed th\u1eaft. \u1ede ch\u1ed7 b\u1ebb g\u00f3c, c\u00e1c s\u1ee3i ph\u00eda ngo\u00e0i \u0111\u01b0\u1eddng cong b\u1ecb k\u00e9o c\u0103ng nhi\u1ec1u h\u01a1n c\u00e1c s\u1ee3i ph\u00eda trong, n\u00ean ch\u00fang \u0111\u1ee9t tr\u01b0\u1edbc v\u00e0 ph\u1ea7n c\u00f2n l\u1ea1i \u0111\u1ee9t theo d\u00e2y chuy\u1ec1n. V\u00ec v\u1eady ch\u1ed7 th\u1eaft n\u00fat lu\u00f4n l\u00e0 n\u01a1i \u0111\u1ee9t \u0111\u1ea7u ti\u00ean tr\u00ean c\u1ea3 tuy\u1ebfn d\u00e2y.<\/p>\n

M\u1ee9c gi\u1ea3m ph\u1ee5 thu\u1ed9c ki\u1ec3u n\u00fat, \u0111\u01b0\u1eddng k\u00ednh d\u00e2y v\u00e0 c\u00e1ch si\u1ebft, n\u00ean kh\u00f4ng c\u00f3 m\u1ed9t con s\u1ed1 ph\u1ea7n tr\u0103m d\u00f9ng chung cho m\u1ecdi tr\u01b0\u1eddng h\u1ee3p. \u0110i\u1ec1u ch\u1eafc ch\u1eafn l\u00e0 m\u1ee9c gi\u1ea3m lu\u00f4n t\u1ed3n t\u1ea1i v\u00e0 kh\u00f4ng nh\u1ecf. N\u1ebfu c\u1ea7n con s\u1ed1 c\u1ee5 th\u1ec3 \u0111\u1ec3 t\u00ednh to\u00e1n, ph\u1ea3i l\u1ea5y t\u1eeb t\u00e0i li\u1ec7u th\u1eed nghi\u1ec7m c\u1ee7a ch\u00ednh lo\u1ea1i d\u00e2y \u0111ang d\u00f9ng, kh\u00f4ng suy t\u1eeb lo\u1ea1i kh\u00e1c.<\/p>\n

Quy \u0111\u1ecbnh v\u1ec1 thi\u1ebft b\u1ecb n\u00e2ng h\u1ea1 v\u1eadt li\u1ec7u n\u00f3i tr\u00ean c\u00f2n n\u00eau m\u1ed9t nguy\u00ean t\u1eafc \u0111\u00e1ng mang sang c\u1ea3 vi\u1ec7c bu\u1ed9c th\u01b0\u1eddng ng\u00e0y: \u0111\u1ed1i v\u1edbi d\u00e2y s\u1ee3i t\u1ef1 nhi\u00ean v\u00e0 s\u1ee3i t\u1ed5ng h\u1ee3p d\u00f9ng l\u00e0m d\u00e2y c\u1ea9u, n\u00fat th\u1eaft kh\u00f4ng \u0111\u01b0\u1ee3c d\u00f9ng thay cho m\u1ed1i b\u1ec7n khuy\u1ebft. N\u00f3i c\u00e1ch kh\u00e1c, khi c\u1ea7n m\u1ed9t v\u00f2ng khuy\u1ebft \u1edf \u0111\u1ea7u d\u00e2y \u0111\u1ec3 ch\u1ecbu t\u1ea3i, m\u1ed1i b\u1ec7n \u0111\u00fang c\u00e1ch b\u1ec1n h\u01a1n h\u1eb3n m\u1ed9t n\u00fat th\u1eaft.<\/p>\n

Ba c\u00e1ch gi\u1ea3m thi\u1ec7t h\u1ea1i trong th\u1ef1c t\u1ebf: h\u1ea1n ch\u1ebf s\u1ed1 n\u00fat tr\u00ean m\u1ed9t tuy\u1ebfn d\u00e2y; \u01b0u ti\u00ean m\u00f3c ho\u1eb7c khuy\u1ebft b\u1ec7n s\u1eb5n thay v\u00ec th\u1eaft ch\u1ed3ng nhi\u1ec1u l\u1edbp; v\u00e0 n\u1ebfu bu\u1ed9c ph\u1ea3i n\u1ed1i hai \u0111o\u1ea1n th\u00ec h\u1ea1 h\u1eb3n m\u1ee9c t\u1ea3i cho ph\u00e9p xu\u1ed1ng, v\u00ec m\u1ed1i n\u1ed1i l\u00e0 \u0111i\u1ec3m y\u1ebfu nh\u1ea5t c\u1ee7a c\u1ea3 tuy\u1ebfn.<\/p>\n

\"B\u1ed9<\/p>\n

D\u00e2y C\u0169, D\u00e2y Ph\u01a1i N\u1eafng V\u00e0 Ph\u1ea7n S\u1ee9c \u0110\u00e3 M\u1ea5t Kh\u00f4ng Nh\u00ecn Th\u1ea5y<\/h2>\n

T\u1ea3i tr\u1ecdng k\u00e9o \u0111\u1ee9t c\u00f4ng b\u1ed1 ch\u1ec9 \u00e1p d\u1ee5ng cho d\u00e2y m\u1edbi, ch\u01b0a qua s\u1eed d\u1ee5ng. D\u00e2y \u0111\u00e3 d\u00f9ng qua th\u1eddi gian, ti\u1ebfp x\u00fac ma s\u00e1t, n\u1eafng m\u01b0a s\u1ebd c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c th\u1ea5p h\u01a1n con s\u1ed1 ban \u0111\u1ea7u, d\u00f9 nh\u00ecn b\u1ec1 ngo\u00e0i v\u1eabn c\u00f2n nguy\u00ean v\u1eb9n. B\u1ed1n c\u01a1 ch\u1ebf l\u00e0m m\u1ea5t s\u1ee9c ch\u1ecbu t\u1ea3i ho\u1ea1t \u0111\u1ed9ng song song v\u00e0 c\u1ed9ng d\u1ed3n:<\/p>\n