{"id":43317,"date":"2024-11-21T15:27:20","date_gmt":"2024-11-21T20:27:20","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/piezoelectric-transducers-the-secret-behind-flawless-ultrasonic-welding\/"},"modified":"2025-01-21T07:25:44","modified_gmt":"2025-01-21T12:25:44","slug":"piezoelectric-transducers-the-secret-behind-flawless-ultrasonic-welding","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/piezoelectric-transducers-the-secret-behind-flawless-ultrasonic-welding\/","title":{"rendered":"\u0110\u1ea7u d\u00f2 \u00e1p \u0111i\u1ec7n: B\u00ed m\u1eadt h\u00e0n si\u00eau \u00e2m ho\u00e0n h\u1ea3o"},"content":{"rendered":"

Si\u00eau \u00e2m h\u00e0n \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t c\u00f4ng ngh\u1ec7 kh\u00f4ng th\u1ec3 thi\u1ebfu trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p, t\u1eeb \u00f4 t\u00f4 v\u00e0 \u0111i\u1ec7n t\u1eed \u0111\u1ebfn y t\u1ebf v\u00e0 h\u00e0ng ti\u00eau d\u00f9ng. Ch\u00ednh x\u00e1c v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a n\u00f3 cho ph\u00e9p li\u00ean k\u1ebft c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c nhau m\u1ed9t c\u00e1ch nhanh ch\u00f3ng v\u00e0 \u0111\u00e1ng tin c\u1eady, m\u00e0 kh\u00f4ng c\u1ea7n s\u1eed d\u1ee5ng nhi\u1ec7t \u0111\u1ed9 cao hay ch\u1ea5t k\u1ebft d\u00ednh. B\u00ed m\u1eadt \u0111\u1eb1ng sau s\u1ef1 ho\u00e0n h\u1ea3o n\u00e0y n\u1eb1m \u1edf b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n, linh ki\u1ec7n c\u1ed1t l\u00f5i t\u1ea1o ra nh\u1eefng rung \u0111\u1ed9ng si\u00eau \u00e2m c\u1ea7n thi\u1ebft cho qu\u00e1 tr\u00ecnh h\u00e0n.<\/p>\n

Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n<\/h3>\n

B\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd \u0111\u1eb7c bi\u1ec7t c\u1ee7a m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u g\u1ed1m s\u1ee9. Khi m\u1ed9t \u0111i\u1ec7n \u00e1p \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng v\u00e0o v\u1eadt li\u1ec7u n\u00e0y, n\u00f3 s\u1ebd thay \u0111\u1ed5i h\u00ecnh d\u1ea1ng. Ng\u01b0\u1ee3c l\u1ea1i, khi v\u1eadt li\u1ec7u b\u1ecb bi\u1ebfn d\u1ea1ng c\u01a1 h\u1ecdc, n\u00f3 s\u1ebd t\u1ea1o ra m\u1ed9t \u0111i\u1ec7n \u00e1p. Trong si\u00eau \u00e2m h\u00e0n, m\u1ed9t d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u t\u1ea7n s\u1ed1 cao \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng v\u00e0o b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n, l\u00e0m cho n\u00f3 dao \u0111\u1ed9ng v\u1edbi t\u1ea7n s\u1ed1 si\u00eau \u00e2m, th\u01b0\u1eddng l\u00e0 t\u1eeb 20kHz \u0111\u1ebfn 70kHz.<\/p>\n

Vai tr\u00f2 c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i trong si\u00eau \u00e2m h\u00e0n<\/h3>\n

Dao \u0111\u1ed9ng c\u01a1 h\u1ecdc \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c khu\u1ebfch \u0111\u1ea1i b\u1edfi b\u1ed9 t\u0103ng c\u01b0\u1eddng v\u00e0 truy\u1ec1n \u0111\u1ebfn \u0111\u1ea7u h\u00e0n, n\u01a1i n\u0103ng l\u01b0\u1ee3ng rung \u0111\u1ed9ng \u0111\u01b0\u1ee3c t\u1eadp trung v\u00e0o v\u00f9ng ti\u1ebfp x\u00fac gi\u1eefa hai v\u1eadt li\u1ec7u c\u1ea7n h\u00e0n. Ma s\u00e1t sinh ra t\u1ea1i \u0111i\u1ec3m ti\u1ebfp x\u00fac n\u00e0y t\u1ea1o ra nhi\u1ec7t, l\u00e0m n\u00f3ng ch\u1ea3y v\u00e0 k\u1ebft d\u00ednh c\u00e1c v\u1eadt li\u1ec7u l\u1ea1i v\u1edbi nhau. B\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n ch\u00ednh l\u00e0 "tr\u00e1i tim" c\u1ee7a to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng, quy\u1ebft \u0111\u1ecbnh hi\u1ec7u su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng m\u1ed1i h\u00e0n.<\/p>\n

C\u00e1c lo\u1ea1i b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n<\/h3>\n

C\u00f3 nhi\u1ec1u lo\u1ea1i b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n kh\u00e1c nhau \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong si\u00eau \u00e2m h\u00e0n, m\u1ed7i lo\u1ea1i c\u00f3 \u0111\u1eb7c t\u00ednh v\u00e0 \u1ee9ng d\u1ee5ng ri\u00eang.<\/p>\n\n\n\n\n\n\n\n
Lo\u1ea1i b\u1ed9 chuy\u1ec3n \u0111\u1ed5i<\/th>\nT\u1ea7n s\u1ed1 ho\u1ea1t \u0111\u1ed9ng<\/th>\n\u01afu \u0111i\u1ec3m<\/th>\nNh\u01b0\u1ee3c \u0111i\u1ec3m<\/th>\n<\/tr>\n<\/thead>\n
Langevin<\/td>\n20kHz – 40kHz<\/td>\nHi\u1ec7u su\u1ea5t cao, \u0111\u1ed9 b\u1ec1n t\u1ed1t<\/td>\nK\u00edch th\u01b0\u1edbc l\u1edbn<\/td>\n<\/tr>\n
Bolt-clamped<\/td>\n20kHz – 70kHz<\/td>\nD\u1ec5 d\u00e0ng thay \u0111\u1ed5i t\u1ea7n s\u1ed1<\/td>\n\u0110\u1ed9 b\u1ec1n k\u00e9m h\u01a1n Langevin<\/td>\n<\/tr>\n
Shear mode<\/td>\n15kHz – 75kHz<\/td>\nPh\u00f9 h\u1ee3p h\u00e0n v\u1eadt li\u1ec7u m\u1ecfng<\/td>\nC\u00f4ng su\u1ea5t th\u1ea5p h\u01a1n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i<\/h3>\n

Hi\u1ec7u su\u1ea5t c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec1u y\u1ebfu t\u1ed1, bao g\u1ed3m v\u1eadt li\u1ec7u ch\u1ebf t\u1ea1o, thi\u1ebft k\u1ebf, t\u1ea7n s\u1ed1 ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng. Vi\u1ec7c l\u1ef1a ch\u1ecdn b\u1ed9 chuy\u1ec3n \u0111\u1ed5i ph\u00f9 h\u1ee3p v\u1edbi \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3 l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng m\u1ed1i h\u00e0n.<\/p>\n

B\u1ea3o tr\u00ec v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i<\/h3>\n

B\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n l\u00e0 m\u1ed9t linh ki\u1ec7n quan tr\u1ecdng v\u00e0 c\u1ea7n \u0111\u01b0\u1ee3c b\u1ea3o tr\u00ec \u0111\u1ecbnh k\u1ef3 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh. Vi\u1ec7c ki\u1ec3m tra v\u00e0 l\u00e0m s\u1ea1ch b\u1ed9 chuy\u1ec3n \u0111\u1ed5i th\u01b0\u1eddng xuy\u00ean s\u1ebd gi\u00fap k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd v\u00e0 ng\u0103n ng\u1eeba c\u00e1c s\u1ef1 c\u1ed1 h\u01b0 h\u1ecfng. N\u1ebfu c\u1ea7n thay th\u1ebf, vi\u1ec7c l\u1ef1a ch\u1ecdn b\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u01b0\u01a1ng th\u00edch l\u00e0 c\u1ea7n thi\u1ebft. V\u00ed d\u1ee5, n\u1ebfu h\u1ec7 th\u1ed1ng \u0111ang s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb c\u1ee7a Beijing Ultrasonic, vi\u1ec7c t\u00ecm ki\u1ebfm b\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u01b0\u01a1ng th\u00edch t\u1eeb c\u00f9ng nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn t\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh \u0111\u1ed3ng b\u1ed9.<\/p>\n

T\u00f3m l\u1ea1i, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n l\u00e0 linh ki\u1ec7n c\u1ed1t l\u00f5i, \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong c\u00f4ng ngh\u1ec7 si\u00eau \u00e2m h\u00e0n. Hi\u1ec3u r\u00f5 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng, c\u00e1c lo\u1ea1i b\u1ed9 chuy\u1ec3n \u0111\u1ed5i v\u00e0 y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a ch\u00fang l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a qu\u00e1 tr\u00ecnh h\u00e0n v\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t. S\u1ef1 ph\u00e1t tri\u1ec3n kh\u00f4ng ng\u1eebng c\u1ee7a c\u00f4ng ngh\u1ec7 \u00e1p \u0111i\u1ec7n h\u1ee9a h\u1eb9n s\u1ebd mang l\u1ea1i nh\u1eefng ti\u1ebfn b\u1ed9 v\u01b0\u1ee3t b\u1eadc h\u01a1n n\u1eefa cho si\u00eau \u00e2m h\u00e0n trong t\u01b0\u01a1ng lai.<\/p>\n","protected":false},"excerpt":{"rendered":"

Si\u00eau \u00e2m h\u00e0n \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t c\u00f4ng ngh\u1ec7 kh\u00f4ng th\u1ec3 thi\u1ebfu trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p, t\u1eeb \u00f4 t\u00f4 v\u00e0 \u0111i\u1ec7n t\u1eed \u0111\u1ebfn y t\u1ebf v\u00e0 h\u00e0ng ti\u00eau d\u00f9ng. Ch\u00ednh x\u00e1c v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a n\u00f3 cho ph\u00e9p li\u00ean k\u1ebft c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c nhau m\u1ed9t c\u00e1ch nhanh ch\u00f3ng v\u00e0 \u0111\u00e1ng tin c\u1eady, m\u00e0<\/p>\n","protected":false},"author":1,"featured_media":42266,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-43317","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/43317","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/comments?post=43317"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/43317\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/42266"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=43317"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=43317"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=43317"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}