{"id":3939,"date":"2019-12-06T05:33:54","date_gmt":"2019-12-06T05:33:54","guid":{"rendered":"https:\/\/www.mcctcarbide.com\/?p=3939"},"modified":"2020-05-06T01:59:02","modified_gmt":"2020-05-06T01:59:02","slug":"to-prolong-a-tool-life-at-high-cutting-speed-what-signs-of-wear-should-we-stay-alert-to","status":"publish","type":"post","link":"https:\/\/www.meetyoucarbide.com\/vi\/de-keo-dai-mot-cong-cu-cuoc-song-o-toc-do-cat-cao-cai-gi-dau-hieu-cua-su-mon-chung-ta-nen-canh-giac-voi\/","title":{"rendered":"\u0110\u1ec3 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u00f4ng c\u1ee5 \u1edf t\u1ed1c \u0111\u1ed9 c\u1eaft cao, ch\u00fang ta n\u00ean c\u1ea3nh b\u00e1o nh\u1eefng d\u1ea5u hi\u1ec7u hao m\u00f2n n\u00e0o?"},"content":{"rendered":"
\n

C\u00f4ng su\u1ea5t ti\u00eau th\u1ee5 trong qu\u00e1 tr\u00ecnh c\u1eaft g\u1ecdt kim lo\u1ea1i \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng nhi\u1ec7t c\u1eaft v\u00e0 ma s\u00e1t. C\u00e1c y\u1ebfu t\u1ed1 n\u00e0y l\u00e0m cho dao \u1edf \u0111i\u1ec1u ki\u1ec7n gia c\u00f4ng x\u1ea5u, ch\u1ecbu t\u1ea3i tr\u1ecdng b\u1ec1 m\u1eb7t l\u1edbn v\u00e0 nhi\u1ec7t \u0111\u1ed9 c\u1eaft cao. Nguy\u00ean nh\u00e2n d\u1eabn \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 cao l\u00e0 do phoi tr\u01b0\u1ee3t d\u1ecdc theo m\u1eb7t tr\u01b0\u1edbc c\u1ee7a d\u1ee5ng c\u1ee5 v\u1edbi t\u1ed1c \u0111\u1ed9 cao, t\u1ea1o ra \u00e1p su\u1ea5t l\u1edbn v\u00e0 ma s\u00e1t m\u1ea1nh tr\u00ean l\u01b0\u1ee1i c\u1eaft.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

S\u1ee5p \u0111\u1ed5<\/h2>\n\n\n\n

Trong qu\u00e1 tr\u00ecnh gia c\u00f4ng, dao c\u1eaft g\u1eb7p \u0111i\u1ec3m c\u1ee9ng trong c\u1ea5u tr\u00fac vi m\u00f4 c\u1ee7a chi ti\u1ebft, ho\u1eb7c c\u1eaft kh\u00f4ng li\u00ean t\u1ee5c c\u00f3 th\u1ec3 l\u00e0m dao \u0111\u1ed9ng l\u1ef1c c\u1eaft. Do \u0111\u00f3, d\u1ee5ng c\u1ee5 c\u1eaft c\u00f3 \u0111\u1eb7c t\u00ednh ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao, \u0111\u1ed9 d\u1ebbo dai cao, ch\u1ecbu m\u00e0i m\u00f2n v\u00e0 \u0111\u1ed9 c\u1ee9ng cao.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

R\u00e3nh m\u00f2n<\/h2>\n\n\n\n

Trong n\u1eeda th\u1ebf k\u1ef7 qua, \u0111\u1ec3 kh\u00f4ng ng\u1eebng n\u00e2ng cao hi\u1ec7u su\u1ea5t c\u1ee7a d\u1ee5ng c\u1ee5 c\u1eaft, r\u1ea5t nhi\u1ec1u c\u00f4ng vi\u1ec7c nghi\u00ean c\u1ee9u \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n. M\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 m\u00e0i m\u00f2n c\u1ee7a h\u1ea7u h\u1ebft t\u1ea5t c\u1ea3 c\u00e1c v\u1eadt li\u1ec7u d\u1ee5ng c\u1ee5 l\u00e0 nhi\u1ec7t \u0111\u1ed9 c\u1eaft \u0111\u1ea1t \u0111\u01b0\u1ee3c trong qu\u00e1 tr\u00ecnh gia c\u00f4ng. Th\u1eadt kh\u00f4ng may, r\u1ea5t kh\u00f3 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c th\u00f4ng s\u1ed1 t\u00ednh to\u00e1n nhi\u1ec7t \u0111\u1ed9 c\u1eaft, nh\u01b0ng ph\u00e9p \u0111o th\u1ef1c nghi\u1ec7m c\u00f3 th\u1ec3 cung c\u1ea5p c\u01a1 s\u1edf cho c\u00f4ng th\u1ee9c th\u1ef1c nghi\u1ec7m.<\/p>\n\n\n\n

N\u00f3i chung, ng\u01b0\u1eddi ta gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng t\u1ea5t c\u1ea3 n\u0103ng l\u01b0\u1ee3ng t\u1ea1o ra trong qu\u00e1 tr\u00ecnh c\u1eaft \u0111\u01b0\u1ee3c chuy\u1ec3n th\u00e0nh nhi\u1ec7t c\u1eaft v\u00e0 80% nhi\u1ec7t c\u1eaft s\u1ebd b\u1ecb c\u00e1c phoi l\u1ea5y \u0111i<\/p>\n\n\n\n

Gi\u00e1 tr\u1ecb s\u1ed1 s\u1ebd thay \u0111\u1ed5i theo m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1, v\u00e0 t\u1ed1c \u0111\u1ed9 c\u1eaft l\u00e0 y\u1ebfu t\u1ed1 ch\u00ednh. \u0110i\u1ec1u n\u00e0y l\u00e0m cho kho\u1ea3ng 20% nhi\u1ec7t \u0111i v\u00e0o d\u1ee5ng c\u1ee5. Ngay c\u1ea3 khi th\u00e9p cacbon th\u1ea5p \u0111\u01b0\u1ee3c c\u1eaft, nhi\u1ec7t \u0111\u1ed9 c\u1ee7a d\u1ee5ng c\u1ee5 c\u00f3 th\u1ec3 v\u01b0\u1ee3t qu\u00e1 550 \u2103, \u0111\u00e2y l\u00e0 nhi\u1ec7t \u0111\u1ed9 cao nh\u1ea5t m\u00e0 HSS c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c. Khi c\u1eaft th\u00e9p c\u1ee9ng b\u1eb1ng d\u1ee5ng c\u1ee5 CBN, nhi\u1ec7t \u0111\u1ed9 c\u1ee7a d\u1ee5ng c\u1ee5 v\u00e0 phoi c\u00f3 th\u1ec3 v\u01b0\u1ee3t qu\u00e1 1000 \u2103.<\/p>\n\n\n\n

M\u1ed1i quan h\u1ec7 gi\u1eefa \u0111\u1ed9 m\u00f2n c\u1ee7a d\u1ee5ng c\u1ee5 v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a d\u1ee5ng c\u1ee5<\/h2>\n\n\n\n

C\u00e1c m\u1eabu m\u1eb7c d\u1ee5ng c\u1ee5 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh c\u00e1c lo\u1ea1i sau:<\/p>\n\n\n\n

Mang m\u1eb7t sau c\u1ee7a m\u00e1y c\u1eaft<\/p>\n\n\n\n

R\u00e3nh m\u00f2n<\/p>\n\n\n\n

m\u1eb7c mi\u1ec7ng n\u00fai l\u1eeda<\/p>\n\n\n\n

S\u1ef1 s\u1ee5p \u0111\u1ed5 c\u1ea1nh c\u1eaft<\/p>\n\n\n\n

V\u1ebft n\u1ee9t n\u00f3ng<\/p>\n\n\n\n

Th\u1ea5t b\u1ea1i trong v\u1ee5 n\u1ed5<\/p>\n\n\n\n

Hi\u1ec7n t\u1ea1i, kh\u00f4ng c\u00f3 \u0111\u1ecbnh ngh\u0129a th\u1ed1ng nh\u1ea5t \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn r\u1ed9ng r\u00e3i v\u1ec1 tu\u1ed5i th\u1ecd d\u1ee5ng c\u1ee5 trong ng\u00e0nh. C\u1ea7n quy \u0111\u1ecbnh tu\u1ed5i th\u1ecd c\u1ee7a dao cho v\u1eadt li\u1ec7u ph\u00f4i v\u00e0 c\u00f4ng ngh\u1ec7 c\u1eaft. M\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ec3 \u0111\u1ecbnh l\u01b0\u1ee3ng tu\u1ed5i th\u1ecd c\u1ee7a d\u1ee5ng c\u1ee5 l\u00e0 x\u00e1c \u0111\u1ecbnh gi\u00e1 tr\u1ecb m\u00f2n l\u1edbn nh\u1ea5t c\u00f3 th\u1ec3 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c c\u1ee7a m\u1eb7t sau, \u0111\u00f3 l\u00e0 VB ho\u1eb7c VBmax.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Mang m\u1eb7t sau c\u1ee7a m\u00e1y c\u1eaft<\/h2>\n\n\n\n

Theo quan \u0111i\u1ec3m to\u00e1n h\u1ecdc, tu\u1ed5i th\u1ecd c\u1ee7a dao c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb b\u1eb1ng c\u00f4ng th\u1ee9c sau. C\u00f4ng th\u1ee9c Taylor cung c\u1ea5p m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n g\u1ea7n \u0111\u00fang t\u1ed1t \u0111\u1ec3 d\u1ef1 \u0111o\u00e1n tu\u1ed5i th\u1ecd c\u1ee7a d\u1ee5ng c\u1ee5.<\/p>\n\n\n\n

Vctn = C, l\u00e0 d\u1ea1ng t\u1ed5ng qu\u00e1t c\u1ee7a c\u00f4ng th\u1ee9c Taylor. C\u00e1c th\u00f4ng s\u1ed1 li\u00ean quan nh\u01b0 sau:<\/p>\n\n\n\n

VC = t\u1ed1c \u0111\u1ed9 c\u1eaft<\/p>\n\n\n\n

T = tu\u1ed5i th\u1ecd d\u1ee5ng c\u1ee5<\/p>\n\n\n\n

D = chi\u1ec1u s\u00e2u c\u1eaft<\/p>\n\n\n\n

F = t\u1ef7 l\u1ec7 th\u1ee9c \u0103n<\/p>\n\n\n\n

X v\u00e0 y \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng th\u1ef1c nghi\u1ec7m. N v\u00e0 C l\u00e0 c\u00e1c h\u1eb1ng s\u1ed1 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng th\u1ef1c nghi\u1ec7m ho\u1eb7c gi\u00e1 tr\u1ecb th\u1ef1c nghi\u1ec7m. Ch\u00fang kh\u00e1c nhau do v\u1eadt li\u1ec7u d\u1ee5ng c\u1ee5, v\u1eadt li\u1ec7u ph\u00f4i v\u00e0 t\u1ed1c \u0111\u1ed9 ti\u1ebfn dao kh\u00e1c nhau.<\/p>\n\n\n\n

T\u1eeb quan \u0111i\u1ec3m th\u1ef1c t\u1ebf, \u0111\u1ec3 h\u1ea1n ch\u1ebf m\u00e0i m\u00f2n d\u1ee5ng c\u1ee5 qu\u00e1 m\u1ee9c v\u00e0 kh\u1eafc ph\u1ee5c nhi\u1ec7t \u0111\u1ed9 cao, c\u1ea7n ch\u00fa \u00fd \u0111\u1ebfn ba y\u1ebfu t\u1ed1 ch\u00ednh: ch\u1ea5t n\u1ec1n, l\u1edbp ph\u1ee7 v\u00e0 x\u1eed l\u00fd c\u1ea1nh c\u1eaft. M\u1ed7i y\u1ebfu t\u1ed1 \u0111\u1ec1u li\u00ean quan \u0111\u1ebfn s\u1ef1 th\u00e0nh c\u00f4ng hay th\u1ea5t b\u1ea1i c\u1ee7a qu\u00e1 tr\u00ecnh c\u1eaft kim lo\u1ea1i. Ba y\u1ebfu t\u1ed1 n\u00e0y, k\u1ebft h\u1ee3p v\u1edbi h\u00ecnh d\u1ea1ng c\u1ee7a r\u00e3nh u\u1ed1n phoi v\u00e0 b\u00e1n k\u00ednh phi l\u00ea c\u1ee7a \u0111\u1ea7u dao, x\u00e1c \u0111\u1ecbnh v\u1eadt li\u1ec7u \u00e1p d\u1ee5ng v\u00e0 th\u1eddi gian \u1ee9ng d\u1ee5ng c\u1ee7a m\u1ed7i d\u1ee5ng c\u1ee5. T\u1ea5t c\u1ea3 c\u00e1c th\u00f4ng s\u1ed1 tr\u00ean k\u1ebft h\u1ee3p v\u1edbi nhau \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o tu\u1ed5i th\u1ecd l\u00e2u d\u00e0i c\u1ee7a d\u1ee5ng c\u1ee5 c\u1eaft, v\u00e0 cu\u1ed1i c\u00f9ng ph\u1ea3n \u00e1nh t\u00ednh kinh t\u1ebf v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a qu\u00e1 tr\u00ecnh gia c\u00f4ng.<\/p>\n\n\n\n

ma tr\u1eadn<\/h2>\n\n\n\n

D\u1ee5ng c\u1ee5 cacbua vonfram c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n v\u00e0 \u0111\u1ed9 d\u1ebbo dai c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng gia c\u00f4ng h\u01a1n. C\u00e1c nh\u00e0 cung c\u1ea5p d\u1ee5ng c\u1ee5 th\u01b0\u1eddng ki\u1ec3m so\u00e1t ph\u1ea1m vi k\u00edch th\u01b0\u1edbc h\u1ea1t WC t\u1eeb 0,3 \u03bcm \u0111\u1ebfn 5 \u03bcm \u0111\u1ec3 n\u1eafm \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t c\u1ee7a ma tr\u1eadn. K\u00edch th\u01b0\u1edbc h\u1ea1t WC c\u00f3 \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a qu\u00e1 tr\u00ecnh c\u1eaft d\u1ee5ng c\u1ee5. K\u00edch th\u01b0\u1edbc h\u1ea1t WC c\u00e0ng nh\u1ecf th\u00ec c\u00f4ng c\u1ee5 c\u00e0ng ch\u1ecbu m\u00e0i m\u00f2n; ng\u01b0\u1ee3c l\u1ea1i, k\u00edch th\u01b0\u1edbc h\u1ea1t WC c\u00e0ng l\u1edbn th\u00ec \u0111\u1ed9 d\u1ebbo dai c\u1ee7a d\u1ee5ng c\u1ee5 c\u00e0ng t\u1ed1t. C\u00e1c c\u00e1nh l\u00e0m b\u1eb1ng ma tr\u1eadn h\u1ea1t si\u00eau m\u1ecbn ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u1eed l\u00fd c\u00e1c v\u1eadt li\u1ec7u \u0111\u00e3 qua x\u1eed l\u00fd trong ng\u00e0nh h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, ch\u1eb3ng h\u1ea1n nh\u01b0 h\u1ee3p kim titan, h\u1ee3p kim Inconel, h\u1ee3p kim nhi\u1ec7t \u0111\u1ed9 cao, v.v.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

T\u00edch t\u1ee5 kh\u1ed1i u<\/h2>\n\n\n\n

Ngo\u00e0i ra, \u0111\u1ed9 dai c\u1ee7a ma tr\u1eadn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 b\u1eb1ng c\u00e1ch \u0111i\u1ec1u ch\u1ec9nh h\u00e0m l\u01b0\u1ee3ng coban t\u1eeb 6% \u0111\u1ebfn 12%. Do \u0111\u00f3, ch\u1ec9 c\u1ea7n \u0111i\u1ec1u ch\u1ec9nh th\u00e0nh ph\u1ea7n c\u1ee7a v\u1eadt li\u1ec7u ma tr\u1eadn \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u c\u1ee7a d\u1ee5ng c\u1ee5 v\u1ec1 \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 b\u1ec1n m\u00e0i m\u00f2n trong \u1ee9ng d\u1ee5ng gia c\u00f4ng kim lo\u1ea1i.<\/p>\n\n\n\n

C\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a ma tr\u1eadn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u0103ng c\u01b0\u1eddng kh\u00f4ng ch\u1ec9 b\u1edfi l\u1edbp gi\u00e0u coban li\u1ec1n k\u1ec1 v\u1edbi l\u1edbp b\u1ec1 m\u1eb7t, m\u00e0 c\u00f2n b\u1eb1ng c\u00e1ch b\u1ed5 sung c\u00f3 ch\u1ecdn l\u1ecdc c\u00e1c lo\u1ea1i nguy\u00ean t\u1ed1 h\u1ee3p kim kh\u00e1c v\u00e0o cacbua xi m\u0103ng, ch\u1eb3ng h\u1ea1n nh\u01b0 cacbua titan (TIC), cacbua tantali (TAC), vanadi cacbua (VC) v\u00e0 niobi cacbua (NBC). L\u1edbp gi\u00e0u coban c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 b\u1ec1n c\u1ee7a l\u01b0\u1ee1i c\u1eaft, l\u00e0m cho d\u1ee5ng c\u1ee5 c\u00f3 hi\u1ec7u su\u1ea5t tuy\u1ec7t v\u1eddi trong c\u00e1c \u1ee9ng d\u1ee5ng gia c\u00f4ng th\u00f4 v\u00e0 gia c\u00f4ng gi\u00e1n \u0111o\u1ea1n.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

V\u1ebft n\u1ee9t n\u00f3ng<\/h2>\n\n\n\n

Ngo\u00e0i ra, \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi v\u1eadt li\u1ec7u ph\u00f4i v\u00e0 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u gia c\u00f4ng c\u1ee5 th\u1ec3, n\u0103m t\u00ednh ch\u1ea5t v\u1eadt l\u00fd sau \u0111\u00e2y c\u1ea7n \u0111\u01b0\u1ee3c xem x\u00e9t khi l\u1ef1a ch\u1ecdn ma tr\u1eadn th\u00edch h\u1ee3p: \u0111\u1ed9 b\u1ec1n va \u0111\u1eadp, \u0111\u1ed9 b\u1ec1n \u0111\u1ee9t g\u00e3y ngang, \u0111\u1ed9 b\u1ec1n n\u00e9n, \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 dai t\u00e1c \u0111\u1ed9ng nhi\u1ec7t.<\/p>\n\n\n\n

l\u1edbp \u00e1o<\/h2>\n\n\n\n

Hi\u1ec7n nay, c\u00e1c v\u1eadt li\u1ec7u ph\u1ee7 ch\u1ee7 \u0111\u1ea1o tr\u00ean th\u1ecb tr\u01b0\u1eddng bao g\u1ed3m:<\/p>\n\n\n\n

Titanium nitride (TIN) – usually PVD coating, has the characteristics of high hardness and high oxidation resistance temperature.<\/p>\n\n\n\n

Titanium nitride carbide (TiCN) – the addition of carbon can improve the hardness and self-lubricating property of the coating.<\/p>\n\n\n\n

Titanium aluminum nitride (TiAlN or AlTiN) – consisting of a layer of alumina, extends tool life in applications with high cutting temperatures, especially for quasi dry \/ dry cutting. Compared with TiAlN coating, the surface hardness of the coating is higher due to the different ratio of aluminum to titanium. This coating scheme is very suitable for high speed machining applications.<\/p>\n\n\n\n

Chromium nitride (CRN) – with the advantages of high hardness and high wear resistance, is the first choice solution to resist chip accretion.<\/p>\n\n\n\n

Diamond (PCD) – has the best processing performance of non-ferrous alloy materials, especially for processing graphite, metal matrix composite, high silicon aluminum alloy and other grinding materials. It is not suitable to process steel at all, because the chemical reaction will destroy the combination of coating and substrate.<\/p>\n\n\n\n

m\u1eb7c mi\u1ec7ng n\u00fai l\u1eeda<\/h2>\n\n\n\n

Qua ph\u00e2n t\u00edch s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a v\u1eadt li\u1ec7u ph\u1ee7 v\u00e0 s\u1ef1 t\u0103ng tr\u01b0\u1edfng c\u1ee7a nhu c\u1ea7u th\u1ecb tr\u01b0\u1eddng trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y, ch\u00fang ta c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng d\u1ee5ng c\u1ee5 tr\u00e1ng PVD ph\u1ed5 bi\u1ebfn h\u01a1n d\u1ee5ng c\u1ee5 ph\u1ee7 CVD. \u0110\u1ed9 d\u00e0y l\u1edbp ph\u1ee7 CVD th\u01b0\u1eddng thay \u0111\u1ed5i trong kho\u1ea3ng 5-15 micron<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u0110\u1ed9 d\u00e0y c\u1ee7a l\u1edbp ph\u1ee7 PVD n\u00f3i chung l\u00e0 t\u1eeb 2-6 \u03bc M. Khi l\u1edbp ph\u1ee7 CVD \u0111\u01b0\u1ee3c ph\u1ee7 l\u00ean b\u1ec1 m\u1eb7t tr\u00ean c\u1ee7a \u0111\u1ebf, \u1ee9ng su\u1ea5t k\u00e9o s\u1ebd \u0111\u01b0\u1ee3c t\u1ea1o ra trong l\u1edbp ph\u1ee7 CVD, trong khi \u1ee9ng su\u1ea5t n\u00e9n s\u1ebd \u0111\u01b0\u1ee3c t\u1ea1o ra trong l\u1edbp ph\u1ee7 PVD. Hai y\u1ebfu t\u1ed1 n\u00e0y c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn l\u01b0\u1ee1i c\u1eaft, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a dao trong c\u1eaft gi\u00e1n \u0111o\u1ea1n ho\u1eb7c gia c\u00f4ng li\u00ean t\u1ee5c. Vi\u1ec7c b\u1ed5 sung c\u00e1c nguy\u00ean t\u1ed1 h\u1ee3p kim m\u1edbi trong qu\u00e1 tr\u00ecnh s\u01a1n ph\u1ee7 kh\u00f4ng ch\u1ec9 c\u00f3 l\u1ee3i \u0111\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u00e1m d\u00ednh c\u1ee7a l\u1edbp ph\u1ee7 m\u00e0 c\u00f2n c\u1ea3i thi\u1ec7n t\u00ednh ch\u1ea5t c\u1ee7a l\u1edbp ph\u1ee7.<\/p>\n\n\n\n

X\u1eed l\u00fd l\u01b0\u1ee1i c\u1eaft<\/h2>\n\n\n\n

Trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, x\u1eed l\u00fd c\u1ea1nh c\u1eaft (th\u1ee5 \u0111\u1ed9ng) quy\u1ebft \u0111\u1ecbnh s\u1ef1 th\u00e0nh c\u00f4ng hay th\u1ea5t b\u1ea1i c\u1ee7a qu\u00e1 tr\u00ecnh gia c\u00f4ng. C\u00e1c tham s\u1ed1 th\u1ee5 \u0111\u1ed9ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi \u1ee9ng d\u1ee5ng \u0111\u1eb7t tr\u01b0\u1edbc. V\u00ed d\u1ee5, x\u1eed l\u00fd c\u1ea1nh c\u1eaft \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u \u0111\u1ec3 ho\u00e0n thi\u1ec7n th\u00e9p \u1edf t\u1ed1c \u0111\u1ed9 cao ho\u00e0n to\u00e0n kh\u00e1c v\u1edbi x\u1eed l\u00fd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho gia c\u00f4ng th\u00f4.<\/p>\n\n\n\n

N\u00f3i chung, qu\u00e1 tr\u00ecnh ti\u1ec7n li\u00ean t\u1ee5c \u0111\u00f2i h\u1ecfi s\u1ef1 th\u1ee5 \u0111\u1ed9ng c\u1ee7a l\u01b0\u1ee1i c\u1eaft, c\u0169ng nh\u01b0 h\u1ea7u h\u1ebft qu\u00e1 tr\u00ecnh phay th\u00e9p v\u00e0 gang. \u0110\u1ed1i v\u1edbi gia c\u00f4ng gi\u00e1n \u0111o\u1ea1n nghi\u00eam tr\u1ecdng, c\u1ea7n ph\u1ea3i t\u0103ng c\u00e1c th\u00f4ng s\u1ed1 th\u1ee5 \u0111\u1ed9ng h\u00f3a ho\u1eb7c \u0111\u1ed9 v\u00e1t \u00e2m t-\u0111\u1ea5t c\u1ee7a l\u01b0\u1ee1i c\u1eaft.<\/p>\n\n\n\n

Ng\u01b0\u1ee3c l\u1ea1i, khi gia c\u00f4ng th\u00e9p kh\u00f4ng g\u1ec9 ho\u1eb7c superralloy, c\u1ea7n ph\u1ea3i ph\u00e2n h\u00f3a l\u01b0\u1ee1i c\u1eaft \u0111\u1ec3 c\u00f3 b\u00e1n k\u00ednh th\u1ee5 \u0111\u1ed9ng nh\u1ecf, v\u00e0 s\u1eed d\u1ee5ng l\u01b0\u1ee1i c\u1eaft s\u1eafc b\u00e9n, v\u00ec khi gia c\u00f4ng c\u00e1c v\u1eadt li\u1ec7u nh\u01b0 v\u1eady, d\u1ec5 sinh ra hi\u1ec7n t\u01b0\u1ee3ng t\u00edch phoi. T\u01b0\u01a1ng t\u1ef1, khi gia c\u00f4ng nh\u00f4m, c\u0169ng c\u1ea7n ph\u1ea3i c\u00f3 m\u1ed9t l\u01b0\u1ee1i c\u1eaft s\u1eafc b\u00e9n.<\/p>\n\n\n\n

V\u1ec1 h\u00ecnh h\u1ecdc, iska cung c\u1ea5p nhi\u1ec1u lo\u1ea1i l\u01b0\u1ee1i c\u1eaft v\u1edbi l\u01b0\u1ee1i c\u1eaft xo\u1eafn \u1ed1c, bi\u00ean d\u1ea1ng c\u1ee7a ch\u00fang \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1 d\u1ea7n quanh b\u1ec1 m\u1eb7t h\u00ecnh tr\u1ee5 d\u1ecdc theo tr\u1ee5c. H\u01b0\u1edbng c\u1ee7a l\u01b0\u1ee1i xo\u1eafn t\u01b0\u01a1ng t\u1ef1 nh\u01b0 m\u1ed9t \u0111\u01b0\u1eddng xo\u1eafn. M\u1ed9t trong nh\u1eefng \u01b0u \u0111i\u1ec3m c\u1ee7a thi\u1ebft k\u1ebf c\u1ea1nh xo\u1eafn \u1ed1c l\u00e0 l\u00e0m cho qu\u00e1 tr\u00ecnh c\u1eaft tr\u01a1n tru v\u00e0 qu\u00e1 m\u1ee9c, gi\u1ea3m ti\u1ebfng \u1ed3n v\u00e0 c\u00f3 \u0111\u01b0\u1ee3c \u0111\u1ed9 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t cao h\u01a1n. Ngo\u00e0i ra, l\u01b0\u1ee1i c\u1eaft xo\u1eafn \u1ed1c c\u00f3 th\u1ec3 ch\u1ecbu t\u1ea3i c\u1eaft nhi\u1ec1u h\u01a1n, c\u00f3 th\u1ec3 gi\u1ea3m l\u1ef1c c\u1eaft v\u00e0 lo\u1ea1i b\u1ecf nhi\u1ec1u kim lo\u1ea1i h\u01a1n c\u00f9ng m\u1ed9t l\u00fac. M\u1ed9t \u01b0u \u0111i\u1ec3m kh\u00e1c c\u1ee7a d\u1ee5ng c\u1ee5 c\u1eaft xo\u1eafn \u1ed1c l\u00e0 ch\u00fang c\u00f3 tu\u1ed5i th\u1ecd d\u1ee5ng c\u1ee5 cao h\u01a1n, v\u00ec ch\u00fang c\u00f3 l\u1ef1c c\u1eaft v\u00e0 nhi\u1ec7t th\u1ea5p h\u01a1n. <\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

The power consumption in the process of metal cutting is expressed in the form of cutting heat and friction. These factors make the tool in bad machining conditions, with high surface load and high cutting temperature. The reason for high temperature is that the chip slides along the front face of the tool at high…<\/p>","protected":false},"author":2,"featured_media":19284,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[92],"tags":[],"jetpack_featured_media_url":"https:\/\/www.meetyoucarbide.com\/wp-content\/uploads\/2019\/12\/\u56fe\u72471-5.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/posts\/3939"}],"collection":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/comments?post=3939"}],"version-history":[{"count":0,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/posts\/3939\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/media\/19284"}],"wp:attachment":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/media?parent=3939"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/categories?post=3939"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/tags?post=3939"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}