{"id":7379,"date":"2024-08-24T11:53:15","date_gmt":"2024-08-24T04:53:15","guid":{"rendered":"https:\/\/yasudaseiki.vn\/?p=7379"},"modified":"2024-08-24T11:53:15","modified_gmt":"2024-08-24T04:53:15","slug":"thu-nghiem-va-dap-charpy-va-izod","status":"publish","type":"post","link":"https:\/\/yasudaseiki.vn\/vi\/thu-nghiem-va-dap-charpy-va-izod\/","title":{"rendered":"Th\u1eed nghi\u1ec7m va \u0111\u1eadp Charpy v\u00e0 Izod"},"content":{"rendered":"

Nhi\u1ec1u s\u1ea3n ph\u1ea9m nh\u1ef1a \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y c\u1ee7a ch\u00fang ta, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh v\u00e0 c\u1ea3n xe h\u01a1i, \u0111\u00f2i h\u1ecfi \u0111\u1ed9 b\u1ec1n ch\u1ed1ng va \u0111\u1eadp. M\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p \u0111\u01a1n gi\u1ea3n nh\u1ea5t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp v\u00e0 \u0111\u1ed9 d\u1ebbo dai c\u1ee7a nh\u1ef1a l\u00e0 th\u1eed nghi\u1ec7m va \u0111\u1eadp Charpy v\u00e0 Izod. \u0110\u00e2y l\u00e0 c\u00e1c th\u1eed nghi\u1ec7m va \u0111\u1eadp con l\u1eafc \u00e1p d\u1ee5ng l\u1ef1c va \u0111\u1eadp t\u1ed1c \u0111\u1ed9 cao v\u00e0o m\u1eabu th\u1eed.<\/p>\n

\n

Th\u1eed nghi\u1ec7m va \u0111\u1eadp con l\u1eafc l\u00e0 g\u00ec?<\/span><\/h2>\n

Th\u1eed nghi\u1ec7m va \u0111\u1eadp con l\u1eafc s\u1eed d\u1ee5ng nguy\u00ean l\u00fd c\u1ee7a con l\u1eafc: b\u00faa con l\u1eafc vung xu\u1ed1ng t\u1eeb \u0111\u1ed9 cao c\u1ee5 th\u1ec3 v\u00e0 \u0111\u1eadp v\u00e0o m\u1eabu c\u00f3 kh\u00eda ch\u1eef V. N\u0103ng l\u01b0\u1ee3ng va \u0111\u1eadp (n\u0103ng l\u01b0\u1ee3ng c\u1ea7n thi\u1ebft \u0111\u1ec3 ph\u00e1 v\u1ee1, bi\u1ebfn d\u1ea1ng ho\u1eb7c \u0111\u1ea9y m\u1eabu ra xa) \u0111\u01b0\u1ee3c \u0111o \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u01b0\u1eddng \u0111\u1ed9 va \u0111\u1eadp c\u1ee7a m\u1eabu, t\u1ee9c l\u00e0 n\u0103ng l\u01b0\u1ee3ng va \u0111\u1eadp \u0111\u01b0\u1ee3c h\u1ea5p th\u1ee5 khi ph\u00e1 v\u1ee1 m\u1eabu. C\u01b0\u1eddng \u0111\u1ed9 va \u0111\u1eadp c\u00e0ng l\u1edbn th\u00ec n\u0103ng l\u01b0\u1ee3ng h\u1ea5p th\u1ee5 khi va \u0111\u1eadp c\u00e0ng l\u1edbn. Do \u0111\u00f3, v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 h\u1ea5p th\u1ee5 nhi\u1ec1u n\u0103ng l\u01b0\u1ee3ng h\u01a1n s\u1ebd b\u1ec1n h\u01a1n v\u00e0 c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c l\u1ef1c va \u0111\u1eadp l\u1edbn h\u01a1n.<\/p>\n

\"impact-image\"<\/div>\n
\n

G\u00f3c n\u00e2ng c\u1ee7a b\u00faa v\u00e0 n\u0103ng l\u01b0\u1ee3ng t\u00e1c \u0111\u1ed9ng<\/h3>\n
\"G\u00f3c<\/div>\n
\n

N\u0103ng l\u01b0\u1ee3ng va ch\u1ea1m l\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa n\u0103ng l\u01b0\u1ee3ng ti\u1ec1m t\u00e0ng c\u1ee7a b\u00faa tr\u01b0\u1edbc v\u00e0 sau khi m\u1eabu b\u1ecb v\u1ee1.<\/p>\n<\/div>\n

\n
\"N\u0103ng<\/div>\n
\n

W<\/span>\u00a0= n\u0103ng l\u01b0\u1ee3ng h\u1ea5p th\u1ee5 khi ph\u00e1 v\u1ee1 m\u1eabu
\nE1<\/sub><\/span>\u00a0= th\u1ebf n\u0103ng c\u1ee7a b\u00faa t\u1ea1i v\u1ecb tr\u00ed ban \u0111\u1ea7u
\nE2<\/sub><\/span>\u00a0= n\u0103ng l\u01b0\u1ee3ng ti\u1ec1m t\u00e0ng c\u1ee7a b\u00faa sau khi va ch\u1ea1m \u1edf g\u00f3c n\u00e2ng<\/p>\n<\/div>\n<\/div>\n

\n

\u0110\u1ec3 t\u00ednh n\u0103ng l\u01b0\u1ee3ng va ch\u1ea1m, ch\u00fang ta ph\u1ea3i t\u00ecm ra s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa hai g\u00f3c: 1) g\u00f3c n\u00e2ng b\u00faa sau khi va ch\u1ea1m v\u00e0 2) g\u00f3c n\u00e2ng b\u00faa khi kh\u00f4ng c\u00f3 m\u1eabu th\u1eed. Ngo\u00e0i ra, ch\u00fang ta c\u0169ng ph\u1ea3i xem x\u00e9t \u0111\u1ebfn t\u1ed5n th\u1ea5t n\u0103ng l\u01b0\u1ee3ng x\u1ea3y ra do l\u1ef1c c\u1ea3n kh\u00f4ng kh\u00ed v\u00e0 ma s\u00e1t trong \u1ed5 tr\u1ee5c con l\u1eafc. Do \u0111\u00f3, n\u0103ng l\u01b0\u1ee3ng \u0111o \u0111\u01b0\u1ee3c s\u1ebd \u0111\u01b0\u1ee3c hi\u1ec7u ch\u1ec9nh \u0111\u1ec3 c\u00f3 k\u1ebft qu\u1ea3 ch\u00ednh x\u00e1c. T\u1ea1i Yasuda Seiki, ch\u00fang t\u00f4i s\u1eed d\u1ee5ng Ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u ch\u1ec9nh \u0111\u01a1n gi\u1ea3n h\u00f3a.<\/p>\n<\/div>\n

\n

\u3010Ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u ch\u1ec9nh \u0111\u01a1n gi\u1ea3n\u3011<\/p>\n

\n
\"Ph\u01b0\u01a1ng<\/div>\n
\n

Wc<\/span>\u00a0= n\u0103ng l\u01b0\u1ee3ng h\u1ea5p th\u1ee5 sau khi hi\u1ec7u ch\u1ec9nh (J)
\nWR<\/span>\u00a0= m\u00f4 men quanh tr\u1ee5c quay c\u1ee7a b\u00faa (N\u30fbm)
\n\u03b1<\/span>\u00a0= g\u00f3c nh\u1ea3 b\u00faa (\u00b0)
\n\u03b1\u2019<\/span>\u00a0= g\u00f3c n\u00e2ng kh\u00f4ng c\u00f3 m\u1eabu th\u1eed khi b\u00faa \u0111\u01b0\u1ee3c nh\u1ea3 t\u1eeb g\u00f3c \u03b1(\u00b0)
\n\u03b2<\/span>\u00a0= g\u00f3c n\u00e2ng sau khi va ch\u1ea1m (\u00b0)<\/p>\n<\/div>\n<\/div>\n<\/div>\n

\n

\u3010T\u00ednh to\u00e1n c\u01b0\u1eddng \u0111\u1ed9 va ch\u1ea1m (kJ\/\u33a1)\u3011<\/p>\n

\n
\"T\u00ednh<\/div>\n
\n

a<\/span>\u00a0= c\u01b0\u1eddng \u0111\u1ed9 va \u0111\u1eadp (kJ\/\u33a1)
\nWc<\/span>\u00a0= n\u0103ng l\u01b0\u1ee3ng h\u1ea5p th\u1ee5 sau khi hi\u1ec7u ch\u1ec9nh (J)
\nb<\/span>\u00a0= chi\u1ec1u r\u1ed9ng m\u1eabu (mm)
\nh<\/span>\u00a0= \u0111\u1ed9 d\u00e0y m\u1eabu (mm)<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

\n

Ph\u01b0\u01a1ng ph\u00e1p th\u1eed<\/span><\/h2>\n

C\u00f3 ch\u1ee7 y\u1ebfu ba lo\u1ea1i th\u1eed nghi\u1ec7m va ch\u1ea1m con l\u1eafc: Charpy, Izod v\u00e0 th\u1eed nghi\u1ec7m va ch\u1ea1m k\u00e9o. Hai ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ea7u ti\u00ean l\u00e0 ph\u1ed5 bi\u1ebfn nh\u1ea5t v\u00e0 s\u1ebd \u0111\u01b0\u1ee3c th\u1ea3o lu\u1eadn trong b\u00e0i vi\u1ebft n\u00e0y.<\/p>\n

\n

Th\u1eed nghi\u1ec7m va ch\u1ea1m Charpy<\/h3>\n
\n

Th\u1eed nghi\u1ec7m va \u0111\u1eadp con l\u1eafc l\u00e0 g\u00ec?<\/span><\/h2>\n

Th\u1eed nghi\u1ec7m va \u0111\u1eadp con l\u1eafc s\u1eed d\u1ee5ng nguy\u00ean l\u00fd c\u1ee7a con l\u1eafc: b\u00faa con l\u1eafc vung xu\u1ed1ng t\u1eeb \u0111\u1ed9 cao c\u1ee5 th\u1ec3 v\u00e0 \u0111\u1eadp v\u00e0o m\u1eabu c\u00f3 kh\u00eda ch\u1eef V. N\u0103ng l\u01b0\u1ee3ng va \u0111\u1eadp (n\u0103ng l\u01b0\u1ee3ng c\u1ea7n thi\u1ebft \u0111\u1ec3 ph\u00e1 v\u1ee1, bi\u1ebfn d\u1ea1ng ho\u1eb7c \u0111\u1ea9y m\u1eabu ra xa) \u0111\u01b0\u1ee3c \u0111o \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u01b0\u1eddng \u0111\u1ed9 va \u0111\u1eadp c\u1ee7a m\u1eabu, t\u1ee9c l\u00e0 n\u0103ng l\u01b0\u1ee3ng va \u0111\u1eadp \u0111\u01b0\u1ee3c h\u1ea5p th\u1ee5 khi ph\u00e1 v\u1ee1 m\u1eabu. C\u01b0\u1eddng \u0111\u1ed9 va \u0111\u1eadp c\u00e0ng l\u1edbn th\u00ec n\u0103ng l\u01b0\u1ee3ng h\u1ea5p th\u1ee5 khi va \u0111\u1eadp c\u00e0ng l\u1edbn. Do \u0111\u00f3, v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 h\u1ea5p th\u1ee5 nhi\u1ec1u n\u0103ng l\u01b0\u1ee3ng h\u01a1n s\u1ebd b\u1ec1n h\u01a1n v\u00e0 c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c l\u1ef1c va \u0111\u1eadp l\u1edbn h\u01a1n.<\/p>\n

\"impact-image\"<\/div>\n
\n

G\u00f3c n\u00e2ng c\u1ee7a b\u00faa v\u00e0 n\u0103ng l\u01b0\u1ee3ng t\u00e1c \u0111\u1ed9ng<\/h3>\n
\"G\u00f3c<\/div>\n
\n

N\u0103ng l\u01b0\u1ee3ng va ch\u1ea1m l\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa n\u0103ng l\u01b0\u1ee3ng ti\u1ec1m t\u00e0ng c\u1ee7a b\u00faa tr\u01b0\u1edbc v\u00e0 sau khi m\u1eabu b\u1ecb v\u1ee1.<\/p>\n<\/div>\n

\n
\"N\u0103ng<\/div>\n
\n

W<\/span>\u00a0= n\u0103ng l\u01b0\u1ee3ng h\u1ea5p th\u1ee5 khi ph\u00e1 v\u1ee1 m\u1eabu
\nE1<\/sub><\/span>\u00a0= th\u1ebf n\u0103ng c\u1ee7a b\u00faa t\u1ea1i v\u1ecb tr\u00ed ban \u0111\u1ea7u
\nE2<\/sub><\/span>\u00a0= n\u0103ng l\u01b0\u1ee3ng ti\u1ec1m t\u00e0ng c\u1ee7a b\u00faa sau khi va ch\u1ea1m \u1edf g\u00f3c n\u00e2ng<\/p>\n<\/div>\n<\/div>\n

\n

\u0110\u1ec3 t\u00ednh n\u0103ng l\u01b0\u1ee3ng va ch\u1ea1m, ch\u00fang ta ph\u1ea3i t\u00ecm ra s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa hai g\u00f3c: 1) g\u00f3c n\u00e2ng b\u00faa sau khi va ch\u1ea1m v\u00e0 2) g\u00f3c n\u00e2ng b\u00faa khi kh\u00f4ng c\u00f3 m\u1eabu th\u1eed. Ngo\u00e0i ra, ch\u00fang ta c\u0169ng ph\u1ea3i xem x\u00e9t \u0111\u1ebfn t\u1ed5n th\u1ea5t n\u0103ng l\u01b0\u1ee3ng x\u1ea3y ra do l\u1ef1c c\u1ea3n kh\u00f4ng kh\u00ed v\u00e0 ma s\u00e1t trong \u1ed5 tr\u1ee5c con l\u1eafc. Do \u0111\u00f3, n\u0103ng l\u01b0\u1ee3ng \u0111o \u0111\u01b0\u1ee3c s\u1ebd \u0111\u01b0\u1ee3c hi\u1ec7u ch\u1ec9nh \u0111\u1ec3 c\u00f3 k\u1ebft qu\u1ea3 ch\u00ednh x\u00e1c. T\u1ea1i Yasuda Seiki, ch\u00fang t\u00f4i s\u1eed d\u1ee5ng Ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u ch\u1ec9nh \u0111\u01a1n gi\u1ea3n h\u00f3a.<\/p>\n<\/div>\n

\n

\u3010Ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u ch\u1ec9nh \u0111\u01a1n gi\u1ea3n\u3011<\/p>\n

\n
\"Ph\u01b0\u01a1ng<\/div>\n
\n

Wc<\/span>\u00a0= n\u0103ng l\u01b0\u1ee3ng h\u1ea5p th\u1ee5 sau khi hi\u1ec7u ch\u1ec9nh (J)
\nWR<\/span>\u00a0= m\u00f4 men quanh tr\u1ee5c quay c\u1ee7a b\u00faa (N\u30fbm)
\n\u03b1<\/span>\u00a0= g\u00f3c nh\u1ea3 b\u00faa (\u00b0)
\n\u03b1\u2019<\/span>\u00a0= g\u00f3c n\u00e2ng kh\u00f4ng c\u00f3 m\u1eabu th\u1eed khi b\u00faa \u0111\u01b0\u1ee3c nh\u1ea3 t\u1eeb g\u00f3c \u03b1(\u00b0)
\n\u03b2<\/span>\u00a0= g\u00f3c n\u00e2ng sau khi va ch\u1ea1m (\u00b0)<\/p>\n<\/div>\n<\/div>\n<\/div>\n

\n

\u3010T\u00ednh to\u00e1n c\u01b0\u1eddng \u0111\u1ed9 va ch\u1ea1m (kJ\/\u33a1)\u3011<\/p>\n

\n
\"T\u00ednh<\/div>\n
\n

a<\/span>\u00a0= c\u01b0\u1eddng \u0111\u1ed9 va \u0111\u1eadp (kJ\/\u33a1)
\nWc<\/span>\u00a0= n\u0103ng l\u01b0\u1ee3ng h\u1ea5p th\u1ee5 sau khi hi\u1ec7u ch\u1ec9nh (J)
\nb<\/span>\u00a0= chi\u1ec1u r\u1ed9ng m\u1eabu (mm)
\nh<\/span>\u00a0= \u0111\u1ed9 d\u00e0y m\u1eabu (mm)<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

\n

Ph\u01b0\u01a1ng ph\u00e1p th\u1eed<\/span><\/h2>\n

C\u00f3 ch\u1ee7 y\u1ebfu ba lo\u1ea1i th\u1eed nghi\u1ec7m va ch\u1ea1m con l\u1eafc: Charpy, Izod v\u00e0 th\u1eed nghi\u1ec7m va ch\u1ea1m k\u00e9o. Hai ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ea7u ti\u00ean l\u00e0 ph\u1ed5 bi\u1ebfn nh\u1ea5t v\u00e0 s\u1ebd \u0111\u01b0\u1ee3c th\u1ea3o lu\u1eadn trong b\u00e0i vi\u1ebft n\u00e0y.<\/p>\n

\n

Th\u1eed nghi\u1ec7m va ch\u1ea1m Charpy<\/h3>\n
\"Ki\u1ec3m<\/div>\n

Ti\u00eau chu\u1ea9n ki\u1ec3m tra c\u1ee7a Ki\u1ec3m tra va \u0111\u1eadp Charpy: JIS K 7111-1, ISO 179-1, ASTM D 6110<\/p>\n

Trong ki\u1ec3m tra va \u0111\u1eadp Charpy, m\u1eabu th\u1eed \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 \u1edf c\u1ea3 hai \u0111\u1ea7u. B\u00faa \u0111\u1eadp v\u00e0o t\u00e2m m\u1eabu \u1edf ph\u00eda \u0111\u1ed1i di\u1ec7n v\u1edbi kh\u00eda. M\u1eabu \u0111\u01b0\u1ee3c c\u1ed1 \u0111\u1ecbnh ch\u1ec9 b\u1eb1ng c\u00e1ch \u0111\u1eb7t l\u00ean \u0111e (tr\u1ea1m ki\u1ec3m tra) v\u00e0 do \u0111\u00f3, c\u00e1c th\u1eed nghi\u1ec7m c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n d\u1ec5 d\u00e0ng v\u00e0 hi\u1ec7u qu\u1ea3.
\nTh\u1eed nghi\u1ec7m va \u0111\u1eadp Charpy l\u00e0 ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m ch\u00ednh th\u1ed1ng c\u1ee7a c\u00e1c th\u1eed nghi\u1ec7m va \u0111\u1eadp con l\u1eafc v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn h\u01a1n so v\u1edbi th\u1eed nghi\u1ec7m va \u0111\u1eadp Izod.<\/p>\n<\/div>\n

\n

Th\u1eed nghi\u1ec7m va \u0111\u1eadp Izod<\/h3>\n
\"Th\u1eed<\/div>\n

Ti\u00eau chu\u1ea9n th\u1eed nghi\u1ec7m c\u1ee7a c\u00e1c th\u1eed nghi\u1ec7m va \u0111\u1eadp Izod: JIS K 7110, ISO180, ASTM D256<\/p>\n

Trong th\u1eed nghi\u1ec7m va \u0111\u1eadp Izod, m\u1eabu th\u1eed \u0111\u01b0\u1ee3c c\u1ed1 \u0111\u1ecbnh \u1edf m\u1ed9t \u0111\u1ea7u. B\u00faa \u0111\u1eadp v\u00e0o \u0111\u1ea7u kia \u1edf ph\u00eda c\u00f3 kh\u00eda. So v\u1edbi th\u1eed nghi\u1ec7m va \u0111\u1eadp Charpy, ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m n\u00e0y bao g\u1ed3m nhi\u1ec1u b\u01b0\u1edbc h\u01a1n trong quy tr\u00ecnh v\u00e0 do \u0111\u00f3 \u0111\u00f2i h\u1ecfi nhi\u1ec1u c\u00f4ng s\u1ee9c h\u01a1n. Tuy nhi\u00ean, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y v\u1eabn \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 nh\u00e0 s\u1ea3n xu\u1ea5t \u00f4 t\u00f4 s\u1eed d\u1ee5ng cho \u0111\u1ebfn ng\u00e0y nay. C\u00e1c nh\u00e0 cung c\u1ea5p ph\u1ee5 t\u00f9ng v\u00e0 v\u1eadt li\u1ec7u cho c\u00e1c th\u01b0\u01a1ng hi\u1ec7u \u00f4 t\u00f4 nh\u01b0 v\u1eady c\u0169ng ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m va \u0111\u1eadp Izod.<\/p>\n<\/div>\n<\/section>\n

\n

Ti\u00eau chu\u1ea9n th\u1eed nghi\u1ec7m<\/span><\/h2>\n

C\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m v\u00e0 m\u00e1y th\u1eed nghi\u1ec7m \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong th\u1eed nghi\u1ec7m va \u0111\u1eadp Charpy v\u00e0 Izod \u0111\u01b0\u1ee3c chu\u1ea9n h\u00f3a b\u1edfi T\u1ed5 ch\u1ee9c Ti\u00eau chu\u1ea9n h\u00f3a Qu\u1ed1c t\u1ebf (ISO), \u1ee6y ban Ti\u00eau chu\u1ea9n C\u00f4ng nghi\u1ec7p Nh\u1eadt B\u1ea3n (JISC) v\u00e0 Hi\u1ec7p h\u1ed9i V\u1eadt li\u1ec7u Th\u1eed nghi\u1ec7m Hoa K\u1ef3 (ASTM).<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n
Ti\u00eau chu\u1ea9n<\/th>\nCh\u1ee7 \u0111\u1ec1<\/th>\nTi\u00eau \u0111\u1ec1<\/th>\n<\/tr>\n<\/thead>\n
JIS\u203b1<\/sup><\/th>\nK 7111-1<\/td>\nCharpy<\/td>\nNh\u1ef1a\u2014X\u00e1c \u0111\u1ecbnh t\u00ednh ch\u1ea5t va \u0111\u1eadp Charpy\u2014Ph\u1ea7n 1: Th\u1eed nghi\u1ec7m va \u0111\u1eadp kh\u00f4ng c\u00f3 d\u1ee5ng c\u1ee5<\/td>\n<\/tr>\n
K 7110<\/td>\nIzod<\/td>\nNh\u1ef1a\u2014X\u00e1c \u0111\u1ecbnh t\u00ednh ch\u1ea5t va \u0111\u1eadp Izod s\u1ee9c m\u1ea1nh<\/td>\n<\/tr>\n
B 7739<\/td>\nM\u00e1y th\u1eed va \u0111\u1eadp<\/td>\nM\u00e1y th\u1eed va \u0111\u1eadp ki\u1ec3u con l\u1eafc cho v\u1eadt li\u1ec7u phi kim lo\u1ea1i\u2014X\u00e1c minh m\u00e1y th\u1eed<\/td>\n<\/tr>\n
ISO<\/th>\n179-1<\/td>\nCharpy<\/td>\nNh\u1ef1a\u2014X\u00e1c \u0111\u1ecbnh t\u00ednh ch\u1ea5t va \u0111\u1eadp Charpy\u2014Ph\u1ea7n 1: Th\u1eed va \u0111\u1eadp kh\u00f4ng d\u00f9ng d\u1ee5ng c\u1ee5<\/td>\n<\/tr>\n
180<\/td>\nIzod<\/td>\nNh\u1ef1a\u2014X\u00e1c \u0111\u1ecbnh s\u1ee9c m\u1ea1nh va \u0111\u1eadp Izod<\/td>\n<\/tr>\n
13802<\/td>\nTh\u1eed va \u0111\u1eadp m\u00e1y m\u00f3c<\/td>\nNh\u1ef1a\u2014Ki\u1ec3m tra m\u00e1y th\u1eed va \u0111\u1eadp con l\u1eafc\u2014Charpy, Izod v\u00e0 th\u1eed va \u0111\u1eadp k\u00e9o<\/td>\n<\/tr>\n
ASTM<\/th>\nD6110<\/td>\nCharpy<\/td>\nPh\u01b0\u01a1ng ph\u00e1p th\u1eed ti\u00eau chu\u1ea9n \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp Charpy c\u1ee7a m\u1eabu nh\u1ef1a kh\u00eda<\/td>\n<\/tr>\n
D256<\/td>\nIzod<\/td>\nPh\u01b0\u01a1ng ph\u00e1p th\u1eed ti\u00eau chu\u1ea9n \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp con l\u1eafc Izod c\u1ee7a nh\u1ef1a<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n
c\u00f3 th\u1ec3 cu\u1ed9n<\/div>\n<\/div>\n<\/div>\n

\u203b1<\/sup>Ti\u00eau chu\u1ea9n c\u00f4ng nghi\u1ec7p Nh\u1eadt B\u1ea3n<\/span><\/p>\n

\n

\u3010Ti\u00eau chu\u1ea9n li\u00ean quan\u3011<\/p>\n

\n\n\n\n\n\n\n
Ti\u00eau chu\u1ea9n<\/th>\nTi\u00eau \u0111\u1ec1<\/th>\n<\/tr>\n<\/thead>\n
JIS<\/th>\nK 7062<\/td>\nPh\u01b0\u01a1ng ph\u00e1p th\u1eed \u0111\u1ed9 b\u1ec1n va \u0111\u1eadp Izod c\u1ee7a nh\u1ef1a gia c\u01b0\u1eddng s\u1ee3i th\u1ee7y tinh<\/td>\n<\/tr>\n
K 7077<\/td>\nPh\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n va \u0111\u1eadp Charpy c\u1ee7a nh\u1ef1a gia c\u01b0\u1eddng s\u1ee3i carbon<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n
scrollable<\/div>\n<\/div>\n<\/div>\n<\/section>\n
\n

B\u00faa, \u0110e v\u00e0 M\u1eabu th\u1eed<\/span><\/h2>\n

C\u00f9ng v\u1edbi quy tr\u00ecnh th\u1eed nghi\u1ec7m, c\u00e1c chi ti\u1ebft v\u1ec1 b\u00faa l\u1eafc, \u0111e v\u00e0 m\u1eabu th\u1eed \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong c\u00e1c ti\u00eau chu\u1ea9n ISO, JIS v\u00e0 ASTM cho c\u1ea3 th\u1eed nghi\u1ec7m va \u0111\u1eadp Charpy v\u00e0 Izod. Do \u0111\u00f3, \u0111i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i hi\u1ec3u nh\u1eefng \u0111i\u1ec1u c\u01a1 b\u1ea3n c\u1ee7a c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m ti\u00eau chu\u1ea9n.<\/p>\n<\/section>\n

\n

Ki\u1ec3m tra t\u00e1c \u0111\u1ed9ng Charpy<\/span><\/h2>\n
\n

B\u00faa Charpy<\/h3>\n
\"Charpy<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Ti\u00eau chu\u1ea9n<\/th>\nN\u0103ng l\u01b0\u1ee3ng ti\u1ec1m n\u0103ng
\n(J)<\/th>\n		M\u1ea5t ma s\u00e1t t\u1ed1i \u0111a cho ph\u00e9p m\u00e0 kh\u00f4ng c\u00f3 m\u1eabu
\n(% c\u00f4ng su\u1ea5t n\u0103ng l\u01b0\u1ee3ng)<\/th>\n		V\u1eadn t\u1ed1c va ch\u1ea1m
\n(m\/s)<\/th>\n		G\u00f3c c\u1ea1nh va ch\u1ea1m
\n(\u00b0)<\/th>\n		B\u00e1n k\u00ednh va ch\u1ea1m C\u1ea1nh
\n(mm)<\/th>\n<\/tr>\n<\/thead>\n
ISO\/JIS<\/th>\n0,5<\/td>\n4<\/td>\n2,9 (\u00b110%)<\/td>\n30\u00b11<\/td>\n2.0\u00b10.5<\/td>\n<\/tr>\n
1<\/td>\n2<\/td>\n<\/tr>\n
2<\/td>\n1<\/td>\n<\/tr>\n
4<\/td>\n0.5<\/td>\n<\/tr>\n
5<\/td>\n0.5<\/td>\n<\/tr>\n
7.5<\/td>\n0.5<\/td>\n3.8 (\u00b110%)<\/td>\n<\/tr>\n
15<\/td>\n0,5<\/td>\n<\/tr>\n
25<\/td>\n0,5<\/td>\n<\/tr>\n
ASTM<\/th>\n2,7\u201321,7<\/td>\nN\/A<\/td>\n3,46<\/td>\n45\u00b12<\/td>\n3,17\u00b10,12<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n
c\u00f3 th\u1ec3 cu\u1ed9n<\/div>\n<\/div>\n<\/div>\n

C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a b\u00faa Charpy kh\u00e1c nhau gi\u1eefa c\u00e1c ti\u00eau chu\u1ea9n th\u1eed nghi\u1ec7m nh\u01b0 \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb trong b\u1ea3ng tr\u00ean. Trong c\u00e1c ti\u00eau chu\u1ea9n ISO v\u00e0 JIS, chi\u1ec1u d\u00e0i b\u00faa thay \u0111\u1ed5i theo v\u1eadn t\u1ed1c va \u0111\u1eadp. Do \u0111\u00f3, kh\u00f4ng th\u1ec3 s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t b\u00faa \u0111\u1ec3 t\u1ea1o ra, v\u00ed d\u1ee5, va \u0111\u1eadp 4 J v\u00e0 va \u0111\u1eadp 7,5 J. Ph\u1ea3i chu\u1ea9n b\u1ecb hai chi\u1ebfc b\u00faa kh\u00e1c nhau.<\/p>\n<\/div>\n

\n

Charpy Anvil<\/h3>\n
\n
\"Charpy<\/div>\n
\"Charpy<\/div>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n
Bi\u1ec3u t\u01b0\u1ee3ng<\/th>\nTham s\u1ed1<\/th>\nISO\/JIS<\/th>\nASTM<\/th>\n<\/tr>\n<\/thead>\n
\u2015<\/th>\nSong song gi\u1eefa tr\u1ee5c d\u00e0i c\u1ee7a m\u1eabu th\u1eed v\u00e0 tham chi\u1ebfu m\u1eb7t ph\u1eb3ng<\/td>\n\u00b14\/1000<\/td>\nN\/A<\/td>\n<\/tr>\n
R2<\/sub><\/th>\nB\u00e1n k\u00ednh \u0111\u1ed9 cong c\u1ee7a \u0111e (mm)<\/td>\n1\u00b10,1<\/td>\n3,17\u00b10,12<\/td>\n<\/tr>\n
\u03b82<\/sub><\/th>\nG\u00f3c c\u00f4n c\u1ee7a \u0111e (\u00b0)<\/td>\n10\u00b11<\/td>\n0<\/td>\n<\/tr>\n
\u03b83<\/sub><\/th>\nG\u00f3c d\u1ed1c c\u1ee7a \u0111e (\u00b0)<\/td>\n5\u00b11<\/td>\n0<\/td>\n<\/tr>\n
\u2015<\/th>\nG\u00f3c c\u1ee7a gi\u00e1 \u0111\u1ee1 v\u00e0 \u0111e (\u00b0)<\/td>\n90\u00b10,1<\/td>\n90<\/td>\n<\/tr>\n
L<\/th>\nKho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c gi\u00e1 \u0111\u1ee1 m\u1eabu (mm)<\/td>\n62\u00b1(0,5\/0)<\/td>\n101,6\u00b10,5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n
c\u00f3 th\u1ec3 cu\u1ed9n<\/div>\n<\/div>\n<\/div>\n

H\u00ecnh d\u1ea1ng c\u1ee7a \u0111e kh\u00e1c nhau gi\u1eefa ti\u00eau chu\u1ea9n ISO (ho\u1eb7c JIS) v\u00e0 ASTM. Do \u0111\u00f3, \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u1ea3 hai th\u1eed nghi\u1ec7m ti\u00eau chu\u1ea9n ISO v\u00e0 ASTM, c\u1ea7n chu\u1ea9n b\u1ecb hai \u0111e kh\u00e1c nhau.<\/p>\n<\/div>\n

\n

K\u00edch th\u01b0\u1edbc c\u1ee7a m\u1eabu th\u1eed Charpy<\/h3>\n
\"M\u1eabu<\/div>\n
\n\n\n\n\n\n\n
Ti\u00eau chu\u1ea9n<\/th>\nChi\u1ec1u d\u00e0i
\nL (mm)<\/th>\n		Chi\u1ec1u r\u1ed9ng
\nb (mm)<\/th>\n		\u0110\u1ed9 d\u00e0y
\nh (mm)<\/th>\n		Chi\u1ec1u r\u1ed9ng c\u00f2n l\u1ea1i \u1edf \u0111\u1ea7u kh\u00eda
\nhN (mm)<\/th>\n<\/tr>\n<\/thead>\n
ISO\/JIS<\/th>\n80\u00b12<\/td>\n4.0\u00b10.2<\/td>\n10.0\u00b10.2<\/td>\n8.0\u00b10.2<\/td>\n<\/tr>\n
ASTM<\/th>\n124.5\u2013127<\/td>\n3.0\u201312.7<\/td>\n12.70\u00b10.15<\/td>\n10.16\u00b10.05<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n
c\u00f3 th\u1ec3 cu\u1ed9n<\/div>\n<\/div>\n<\/div>\n

Ti\u00eau chu\u1ea9n ISO v\u00e0 JIS v\u1ec1 \u0111\u1ed9 s\u00e2u kh\u00eda l\u00e0 2 mm, trong khi ti\u00eau chu\u1ea9n ASTM l\u00e0 2,54 mm. ASTM c\u0169ng kh\u00f4ng ch\u1ec9 \u0111\u1ecbnh chi\u1ec1u d\u00e0i v\u00e0 chi\u1ec1u r\u1ed9ng ch\u00ednh x\u00e1c c\u1ee7a m\u1eabu th\u1eed nghi\u1ec7m, m\u00e0 thay v\u00e0o \u0111\u00f3 ch\u1ec9 ra m\u1ed9t ph\u1ea1m vi c\u1ee5 th\u1ec3.<\/p>\n<\/div>\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Nhi\u1ec1u s\u1ea3n ph\u1ea9m nh\u1ef1a \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y c\u1ee7a ch\u00fang ta, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh v\u00e0 c\u1ea3n xe h\u01a1i, \u0111\u00f2i h\u1ecfi \u0111\u1ed9 b\u1ec1n ch\u1ed1ng va \u0111\u1eadp. M\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p \u0111\u01a1n gi\u1ea3n nh\u1ea5t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp v\u00e0 \u0111\u1ed9 d\u1ebbo dai […]\n","protected":false},"author":2,"featured_media":5263,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[165],"tags":[],"class_list":["post-7379","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/yasudaseiki.vn\/vi\/wp-json\/wp\/v2\/posts\/7379","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yasudaseiki.vn\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yasudaseiki.vn\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yasudaseiki.vn\/vi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/yasudaseiki.vn\/vi\/wp-json\/wp\/v2\/comments?post=7379"}],"version-history":[{"count":0,"href":"https:\/\/yasudaseiki.vn\/vi\/wp-json\/wp\/v2\/posts\/7379\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/yasudaseiki.vn\/vi\/wp-json\/wp\/v2\/media\/5263"}],"wp:attachment":[{"href":"https:\/\/yasudaseiki.vn\/vi\/wp-json\/wp\/v2\/media?parent=7379"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yasudaseiki.vn\/vi\/wp-json\/wp\/v2\/categories?post=7379"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yasudaseiki.vn\/vi\/wp-json\/wp\/v2\/tags?post=7379"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}