{"id":1169,"date":"2024-03-12T07:30:33","date_gmt":"2024-03-11T23:30:33","guid":{"rendered":"https:\/\/www.aluminumetals.com\/?p=1169"},"modified":"2024-03-12T13:15:51","modified_gmt":"2024-03-12T05:15:51","slug":"astm-a681-high-speed-d7-tool-steel-bar","status":"publish","type":"post","link":"https:\/\/www.aluminumetals.com\/tr\/astm-a681-yuksek-hizli-d7-takim-celik-cubuk\/","title":{"rendered":"ASTM A681 Y\u00fcksek h\u0131zl\u0131 D7 tak\u0131m \u00e7eli\u011fi \u00e7ubu\u011fu"},"content":{"rendered":"

D7 Tak\u0131m \u00c7eli\u011fi, m\u00fckemmel a\u015f\u0131nma direncine sahip, y\u00fcksek karbonlu, y\u00fcksek kromlu, havayla sertle\u015fen bir tak\u0131m \u00e7eli\u011fidir. <\/p>\n\n\n\n

Bu a\u015f\u0131nma direnci esas olarak, yakla\u015f\u0131k 80 ila 85 Rockwell C'ye e\u015fde\u011fer bir sertli\u011fe sahip, \u00e7elikte \u00e7ok say\u0131da sert vanadyum karb\u00fcr par\u00e7ac\u0131klar\u0131 olu\u015fturan y\u00fcksek karbon ve vanadyum i\u00e7eri\u011finden kaynaklanmaktad\u0131r. <\/p>\n\n\n\n

Bu \u00f6zellik, D7 tak\u0131m \u00e7eli\u011fini, di\u011fer \u00e7eliklerle kayarak temas halindeyken ve kum, kumlama ortam\u0131 ve seramik gibi sert a\u015f\u0131nd\u0131r\u0131c\u0131 par\u00e7ac\u0131klar\u0131n kuru ve \u0131slak \u00e7amurlar\u0131yla temas etti\u011finde a\u015f\u0131nmaya kar\u015f\u0131 diren\u00e7 g\u00f6stermede etkili k\u0131lar.<\/p>\n\n\n\n

D7 tak\u0131m \u00e7eli\u011fi, esas olarak tu\u011fla kal\u0131p astarlar\u0131, briketleme kal\u0131plar\u0131, kumlama ekipman\u0131 astarlar\u0131, seramik ekstr\u00fczyon ve \u015fekillendirme tak\u0131mlar\u0131, toz s\u0131k\u0131\u015ft\u0131rma tak\u0131mlar\u0131, derin \u00e7ekme kal\u0131plar\u0131, d\u00fczle\u015ftirme silindirleri ve tak\u0131m tezgah\u0131 k\u0131lavuz raylar\u0131 vb. dahil olmak \u00fczere yayg\u0131n olarak kullan\u0131lmaktad\u0131r. <\/p>\n\n\n\n

Bu uygulama senaryolar\u0131nda D7 tak\u0131m \u00e7eli\u011finin a\u015f\u0131nma direnci, sertli\u011fi ve toklu\u011fundan tam olarak yararlan\u0131l\u0131r.<\/p>\n\n\n\n

Is\u0131l i\u015flem a\u00e7\u0131s\u0131ndan D7'nin sertle\u015fme s\u00fcreci tak\u0131m \u00e7eli\u011fi <\/a>\u00f6n \u0131s\u0131tma, \u00f6stenitizasyon (y\u00fcksek s\u0131cakl\u0131k) ve temperleme gibi ad\u0131mlar\u0131 gerektirir. <\/p>\n\n\n\n

Maksimum a\u015f\u0131nma direnci i\u00e7in tipik tavlama s\u0131cakl\u0131\u011f\u0131 300\u00b0F'dir (149\u00b0C). Ayr\u0131ca, maksimum dayan\u0131kl\u0131l\u0131k i\u00e7in, 510\u00b0C'nin (950\u00b0F) \u00fczerindeki bir s\u0131cakl\u0131kta iki saat tutularak ve daha sonra iki saat daha tutularak \u00e7ift temperleme de ger\u00e7ekle\u015ftirilebilir.<\/p>\n\n\n\n

Kesme i\u015flenebilirli\u011fi a\u00e7\u0131s\u0131ndan, D7 tak\u0131m \u00e7eli\u011finin kesme i\u015flenebilirli\u011fi 1% karbon \u00e7eli\u011finin yakla\u015f\u0131k 30-35%'sidir. Bu, iyi bir i\u015fleme kalitesi ve verimlili\u011fi sa\u011flamak i\u00e7in i\u015fleme s\u00fcreci s\u0131ras\u0131nda uygun alet ve tekniklerin gerekli oldu\u011fu anlam\u0131na gelir.<\/p>\n\n\n\n

Genel olarak D7 tak\u0131m \u00e7eli\u011fi, a\u015f\u0131nmaya ve darbeye dayanmas\u0131 gereken \u00e7e\u015fitli uygulama senaryolar\u0131na uygun, y\u00fcksek performansl\u0131, a\u015f\u0131nmaya dayan\u0131kl\u0131 bir tak\u0131m \u00e7eli\u011fidir. <\/p>\n\n\n\n

M\u00fckemmel a\u015f\u0131nma direnci, sertli\u011fi ve toklu\u011funun yan\u0131 s\u0131ra iyi kesme i\u015flenebilirli\u011fi, end\u00fcstriyel imalatta yayg\u0131n olarak kullan\u0131lmas\u0131n\u0131 sa\u011flar.<\/p>\n\n\n\n

D7 tak\u0131m \u00e7eli\u011fi, m\u00fckemmel fiziksel ve kimyasal \u00f6zellikleri nedeniyle end\u00fcstriyel \u00fcretimde \u00f6nemli bir konuma sahip, y\u00fcksek kaliteli, y\u00fcksek karbonlu, y\u00fcksek krom ala\u015f\u0131ml\u0131 bir tak\u0131m \u00e7eli\u011fidir. Bu makale D7 tak\u0131m \u00e7eli\u011finin \u00f6zelliklerini ve ana kullan\u0131m alanlar\u0131n\u0131 detayland\u0131rmay\u0131 ama\u00e7lamaktad\u0131r.<\/p>\n\n\n\n

D7 Tak\u0131m \u00c7eli\u011fi'nin ba\u015fl\u0131ca \u00f6zellikleri<\/strong>
Y\u00fcksek sertlik ve g\u00fc\u00e7l\u00fc a\u015f\u0131nma direnci:<\/strong> Uygun \u0131s\u0131l i\u015flemden sonra D7 \u00e7eli\u011fi son derece y\u00fcksek sertli\u011fe ula\u015fabilir ve bu da ona m\u00fckemmel a\u015f\u0131nma direnci sa\u011flar. <\/p>\n\n\n\n

Bu \u00f6zellik, D7 \u00e7eli\u011fini y\u00fcksek y\u00fcklere ve y\u00fcksek h\u0131zda s\u00fcrt\u00fcnmeye maruz kalan \u00e7al\u0131\u015fma ortamlar\u0131nda m\u00fckemmel k\u0131lar.<\/p>\n\n\n\n

Etki dayan\u0131kl\u0131l\u0131\u011f\u0131: <\/strong>Y\u00fcksek sertli\u011fi ve iyi toklu\u011fu nedeniyle D7 tak\u0131m \u00e7eli\u011fi iyi darbe direncine sahiptir ve d\u0131\u015f kuvvetlerden etkilendi\u011finde yap\u0131sal b\u00fct\u00fcnl\u00fc\u011f\u00fc koruyabilir.<\/p>\n\n\n\n

Korozyon direnci:<\/strong> D7 tak\u0131m \u00e7eli\u011fi belirli miktarda krom i\u00e7erir, bu da baz\u0131 a\u015f\u0131nd\u0131r\u0131c\u0131 ortamlarda iyi stabilite ve dayan\u0131kl\u0131l\u0131k sa\u011flamas\u0131na olanak tan\u0131r.<\/p>\n\n\n\n

\n
\"D2
D2 \u00e7elik yuvarlak \u00e7ubuk<\/figcaption><\/figure>\n\n\n\n
\"D7
D7 Tak\u0131m \u00c7eli\u011fi \u00c7ubuk<\/figcaption><\/figure>\n\n\n\n
\"Ala\u015f\u0131ml\u0131
ALA\u015eIM \u00c7EL\u0130K Yuvarlak \u00e7ubuk D7<\/figcaption><\/figure>\n<\/figure>\n\n\n\n

D7 ve D2 tak\u0131m \u00e7eli\u011fi aras\u0131ndaki farklar nelerdir?<\/p>\n\n\n\n

D7 tak\u0131m \u00e7eli\u011fi ve D2 tak\u0131m \u00e7eli\u011fi (Cr12MoV olarak da bilinir), her biri benzersiz \u00f6zelliklere ve uygulamalara sahip iki farkl\u0131 tak\u0131m \u00e7eli\u011fidir.<\/p>\n\n\n\n

D7 Tak\u0131m \u00c7eli\u011fi, m\u00fckemmel a\u015f\u0131nma direncine sahip, y\u00fcksek karbonlu, y\u00fcksek kromlu, havayla sertle\u015fen bir tak\u0131m \u00e7eli\u011fidir. Y\u00fcksek karbon ve vanadyum i\u00e7eri\u011fi, \u00e7elikte yakla\u015f\u0131k 80 ila 85 Rockwell C'ye e\u015fde\u011fer bir sertli\u011fe sahip \u00e7ok say\u0131da sert vanadyum karb\u00fcr par\u00e7ac\u0131klar\u0131n\u0131n olu\u015fmas\u0131na neden olur. <\/p>\n\n\n\n

Bu nedenle, di\u011fer \u00e7eliklerle kayarak temas\u0131n ve kum, kumlama ortam\u0131 ve seramik gibi sert a\u015f\u0131nd\u0131r\u0131c\u0131 par\u00e7ac\u0131klarla kuru ve \u0131slak \u00e7amur temas\u0131n\u0131n neden oldu\u011fu a\u015f\u0131nmaya etkili bir \u015fekilde diren\u00e7 g\u00f6sterir. Bu, D7 tak\u0131m \u00e7eli\u011fini tu\u011fla kal\u0131p astarlar\u0131, briketleme kal\u0131plar\u0131, kumlama ekipman\u0131 astarlar\u0131, seramik ekstr\u00fczyon ve \u015fekillendirme tak\u0131mlar\u0131, toz s\u0131k\u0131\u015ft\u0131rma tak\u0131mlar\u0131, derin \u00e7ekme kal\u0131plar\u0131, d\u00fczle\u015ftirme silindirleri ve tak\u0131m tezgah\u0131 k\u0131lavuz raylar\u0131 dahil olmak \u00fczere \u00e7e\u015fitli uygulamalar i\u00e7in uygun hale getirir.<\/p>\n\n\n\n

D2 tak\u0131m \u00e7eli\u011fi (Cr12MoV) ayn\u0131 zamanda m\u00fckemmel sertli\u011fe, a\u015f\u0131nma direncine, korozyon direncine ve deformasyon direncine sahip y\u00fcksek karbonlu, y\u00fcksek kromlu bir tak\u0131m \u00e7eli\u011fidir. Karbon i\u00e7eri\u011fi 1.40%-1.60% kadar y\u00fcksektir, bu da sertli\u011fini ve a\u015f\u0131nma direncini art\u0131r\u0131r. <\/p>\n\n\n\n

Ayn\u0131 zamanda \u00e7elik, korozyon direncini etkili bir \u015fekilde art\u0131rabilen y\u00fcksek krom ve molibden i\u00e7eri\u011fine de sahiptir. <\/p>\n\n\n\n

D2 tak\u0131m \u00e7eli\u011fi, su verme ve temperleme gibi \u0131s\u0131l i\u015flem s\u00fcre\u00e7leriyle m\u00fckemmel mekanik \u00f6zellikler ve sertlik elde edebilir ve \u00e7e\u015fitli i\u015fleme gereksinimlerini kar\u015f\u0131lamak i\u00e7in iyi i\u015flenebilirli\u011fe sahiptir. Bu \u00f6zellikler D2 tak\u0131m \u00e7eli\u011finin kal\u0131plar, kesici tak\u0131mlar ve d\u00f6vme kal\u0131plar\u0131 gibi y\u00fcksek kaliteli par\u00e7alar\u0131n \u00fcretiminde yayg\u0131n olarak kullan\u0131lmas\u0131n\u0131 sa\u011flar.<\/p>\n\n\n\n

D7 tak\u0131m \u00e7eli\u011finin kimyasal bile\u015fimi (k\u00fctle oran\u0131) (a\u011f\u0131rl\u0131k\u00e7a %)<\/strong><\/h2>\n\n\n\n
C(%)<\/td>Si(%)<\/td>Mn(\uff05)<\/td>P(%)<\/td>S(%)<\/td>Kr(\uff05)<\/td>Ay(\uff05)<\/td>V(%)<\/td><\/tr>
2.15~2.50<\/td>0.10~0.60<\/td>0.10~0.60<\/td>\u22640,030<\/td>\u22640,030<\/td>11.5~13.5<\/td>0.70~1.20<\/td>3.80~4.40<\/td><\/tr><\/tbody><\/table>
D7 tak\u0131m \u00e7eli\u011fi standard\u0131<\/strong><\/figcaption><\/figure>\n\n\n\n

ASTM A681-ABD
FED QQ-T-570-ABD
SAE J437-ABD
SAE J438-ABD
UNS T30407-ABD
AISI D7 Tak\u0131m \u00c7eli\u011fi-ABD<\/p>\n\n\n\n

Eritme Se\u00e7ene\u011fi<\/strong> D7'nin<\/h2>\n\n\n\n

1 EAF: Elektrik Ark Oca\u011f\u0131<\/p>\n\n\n\n

2 EAF+LF+VD: Rafine eritme ve vakumla gaz giderme<\/p>\n\n\n\n

3 EAF+ESR: Elektro C\u00fcrufun Yeniden Ergitilmesi<\/p>\n\n\n\n

4 EAF+PESR: koruyucu atmosfer Elektro C\u00fcrufun Yeniden Eritilmesi<\/p>\n\n\n\n

5 VIM+PESR: Vakum ind\u00fcksiyonlu eritme<\/p>\n\n\n\n

\u015eekillendirme <\/strong>Se\u00e7enek<\/strong> D7 \u00c7elik<\/h2>\n\n\n\n

1 S\u0131cak haddeleme i\u015flemi<\/p>\n\n\n\n

2 S\u0131cak D\u00f6vme: Elektro-hidrolik; Y\u00fcksek h\u0131zl\u0131 hidrolik; Ya\u011fl\u0131 hidrolik; Hassas d\u00f6vme<\/p>\n\n\n\n

Is\u0131l \u0130\u015flem Se\u00e7ene\u011fi<\/strong> d7 \u00e7elikten<\/h2>\n\n\n\n

1 +A: Tavlanm\u0131\u015f (tam\/yumu\u015fak\/k\u00fcreselle\u015ftirme)<\/p>\n\n\n\n

2 +N: Normalle\u015ftirilmi\u015f<\/p>\n\n\n\n

3 +NT: Normalle\u015ftirilmi\u015f ve temperlenmi\u015f<\/p>\n\n\n\n

4 +QT: Su verilmi\u015f ve temperlenmi\u015f (su\/ya\u011f)<\/p>\n\n\n\n

Y\u00fczey Se\u00e7ene\u011fi<\/strong> Tak\u0131m \u00c7eli\u011fi<\/h2>\n\n\n\n

1 Siyah Y\u00fczey<\/p>\n\n\n\n

2 Topraklanm\u0131\u015f: Parlak ama p\u00fcr\u00fczl\u00fc; Hassas de\u011fil<\/p>\n\n\n\n

3 Plakan\u0131n i\u015flenmesi: Parlak ve hassas; K\u00fc\u00e7\u00fck d\u00f6n\u00fc\u015f yaras\u0131<\/p>\n\n\n\n

4 Soyulmu\u015f\/Tornalanm\u0131\u015f: Parlak ve hassas; K\u00fc\u00e7\u00fck d\u00f6n\u00fc\u015f yaras\u0131<\/p>\n\n\n\n

5 Cilal\u0131: \u00c7ok Parlak ve hassas boyut; Yara izi d\u00f6nm\u00fcyor<\/p>\n\n\n\n

MEKAN\u0130K \u00d6ZELL\u0130KLER<\/strong> \u0130LE \u0130LG\u0130L\u0130 TAKIM \u00c7EL\u0130\u011e\u0130 D7<\/a><\/h2>\n\n\n\n
Teslim olmak
Rp0,2 (MPa)<\/td>		\u00c7ekme
Rm (MPa)<\/td>		Darbe
KV\/Ku (J)<\/td>		Uzama
bir (%)<\/td>		K\u0131r\u0131lma s\u0131ras\u0131nda kesitte azalma
Z (%)<\/td>		Is\u0131l \u0130\u015flem G\u00f6rm\u00fc\u015f Durum<\/td>Brinell sertli\u011fi (HBW)<\/td><\/tr>
984 (\u2265)<\/td>682 (\u2265)<\/td>41<\/td>31<\/td>23<\/td>\u00c7\u00f6z\u00fcm ve Ya\u015fland\u0131rma, Tavlama, Ausaging, Q+T, vb.<\/td>322<\/td><\/tr><\/tbody><\/table>
D7 Boyut Aral\u0131klar\u0131<\/strong><\/figcaption><\/figure>\n\n\n\n
\u00dcr\u00fcnler<\/td> \u00c7ap(mm)<\/td>Uzunluk (mm)<\/td><\/tr>
Haddelenmi\u015f \u00c7ubuk<\/td> 10~95<\/td>3000~5700<\/td><\/tr>
D\u00f6vme \u00c7ubuk<\/td> 95~440<\/td>3000~5700<\/td><\/tr>
K\u00fct\u00fck<\/td> 130\u00d7130, 140\u00d7140, 150\u00d7150, 160\u00d7160<\/td>7000Maks<\/td><\/tr><\/tbody><\/table><\/figure>","protected":false},"excerpt":{"rendered":"

D7 Tak\u0131m \u00c7eli\u011fi, m\u00fckemmel a\u015f\u0131nma direncine sahip, y\u00fcksek karbonlu, y\u00fcksek kromlu, havayla sertle\u015fen bir tak\u0131m \u00e7eli\u011fidir. Bu a\u015f\u0131nma direnci esas olarak, \u00e7elikte \u00e7ok say\u0131da sert vanadyum karb\u00fcr par\u00e7ac\u0131klar\u0131 olu\u015fturan ve sertli\u011fi yakla\u015f\u0131k 80 ila 85 Rockwell C'ye e\u015fde\u011fer olan y\u00fcksek karbon ve vanadyum i\u00e7eri\u011finden kaynaklanmaktad\u0131r. Bu [\u2026]<\/p>","protected":false},"author":2,"featured_media":1171,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[107,134],"class_list":["post-1169","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-alloy-tool-steel","tag-alloy-steel","tag-tool-steel"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.aluminumetals.com\/tr\/wp-json\/wp\/v2\/posts\/1169","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.aluminumetals.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.aluminumetals.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.aluminumetals.com\/tr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.aluminumetals.com\/tr\/wp-json\/wp\/v2\/comments?post=1169"}],"version-history":[{"count":7,"href":"https:\/\/www.aluminumetals.com\/tr\/wp-json\/wp\/v2\/posts\/1169\/revisions"}],"predecessor-version":[{"id":1187,"href":"https:\/\/www.aluminumetals.com\/tr\/wp-json\/wp\/v2\/posts\/1169\/revisions\/1187"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.aluminumetals.com\/tr\/wp-json\/wp\/v2\/media\/1171"}],"wp:attachment":[{"href":"https:\/\/www.aluminumetals.com\/tr\/wp-json\/wp\/v2\/media?parent=1169"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.aluminumetals.com\/tr\/wp-json\/wp\/v2\/categories?post=1169"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.aluminumetals.com\/tr\/wp-json\/wp\/v2\/tags?post=1169"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}