Nyowani Tekinoroji Ye Die-Kukanda Mould Pamusoro Kurapa

Mhando dzakasiyana-siyana dzekufa-dzichikanda muforoma matekinoroji ekurapa anoramba achibuda, asi kazhinji anogona kuve akapatsanurwa muzvikamu zvitatu zvinotevera:

• 1.Ivandudzwa tekinoroji yechinyakare kupisa kurapwa maitiro;
• 2.Surface shanduko tekinoroji, inosanganisira pamusoro pekupisa yekuwedzera kurapwa, pamusoro pechikamu shanduko yekusimbisa, magetsi emagetsi ekusimbisa tekinoroji, nezvimwe;
• 3.Coating michina, kusanganisira electroless yakanamirwa pamifananidzo, etc.

Kufa-kukanda maumburu iri chikamu hombe chemafuru. Nekukurumidza kukurumidza kwenyika yemotokari uye mudhudhudhu indasitiri, iyo yekufa-yekurasa indasitiri yakatangisa munguva nyowani yekuvandudza. Panguva iyoyowo, yepamusoro zvinodiwa vanoiswa mberi kuti nzwisisika zvemaziso zvivakwa uye hupenyu kufa-vachikanda anoumba. Luo Baihui, Secretary-General weInternational Mould Association, anotenda kuti zvichiri kunetsa kuzadzisa zvinoramba zvichiwedzera mashandiro anoita izvo zvinongovimba nekushandiswa kwezvinhu zvitsva zveforoma. Yakasiyana-siyana pamusoro pekurapa matekinoroji anofanirwa kuiswa kune ekurapa kwepamusoro kufa-kukanda mafuru kuti uwane kugona kwakanyanya kweanofa-vachikanda mafuru. , Yakakwira chaiyo uye yakareba hupenyu zvinodiwa. Pakati peforoma dzakasiyana siyana, iwo mamiriro ekushanda eakafa-vachikanda maforoma akaomarara. Kufa uchikanda ndiko kuzadza chakuvhuvhu mhango pamwe nesimbi yakanyungudutswa pasi kumanikidzwa uye kumhanya uye kufa-kukanda. Iyo inowanzo taura nesimbi inopisa panguva yekushanda. Naizvozvo, iyo yekufa-yekukanda muforoma inodiwa kuti ive yakanyanya kupisa kupisa, kupisa kupisa, kupfeka kuramba, uye ngura kuramba. , Impact kuomarara, tsvuku kuomarara, yakanaka muforoma kuburitswa, nezvimwewo Naizvozvo iyo yepamusoro yekurapa tekinoroji zvinoda kufa-vachikanda mafuru ari mashoma.

Yakagadziridzwa tekinoroji yetsika kupisa kurapwa maitiro

Iyo yechinyakare kupisa kupisa maitiro ekufa-kukanda mold inodzima-kupisa, uye gare gare pamusoro pekurapa tekinoroji yakagadziridzwa. Nekuda kwezvakasiyana zvezvinhu zvinogona kushandiswa sekufa-kukanda mold, imwechete yepamusoro yekurapa tekinoroji uye maitiro akaiswa kune akasiyana zvinhu anoburitsa akasiyana mhedzisiro. Schoff inokurudzira substrate pretreatment tekinoroji ye mold substrate uye pamusoro pekurapa tekinoroji. 

Pahwaro hwechinyakare tekinoroji, yakakodzera kugadzirisa tekinoroji yezvakasiyana mold zvinhu inokurudzirwa kuvandudza mold kuita uye kuwedzera mold hupenyu. Imwe nzira yekusimudzira yekuvandudza tekinoroji yekurapa kupisa ndeyekubatanidza tekinoroji yechinyakare yekurapa kupisa nehunyanzvi hwepamusoro hwekurapa tekinoroji kuwedzera hupenyu hwesevhisi yekufa-casting mold. 

Semuyenzaniso, kemikari kupisa kupisa nzira carbonitriding, NQN yakasanganiswa neyakajairwa quenching uye tempering muitiro (zvinonzi carbonitriding-quenching-carbonitriding composite kusimbisa, kwete chete kuwana yakakwirira pamusoro kuoma, asiwo inoshanda kuomesa layer. 

Iko kudzika kunowedzera, kuomarara kwe gradient kugoverwa kweiyo infiltrated layer inonzwisisika, kugadzikana kwekudzikama uye kushorwa kwecorrosion kunovandudzwa, kuitira kuti nepo kufa-casting mold inowana yakanaka core performance, kunaka kwepamusoro uye kuita kunovandudzwa zvakanyanya.

Pamusoro shanduko tekinoroji

Pamusoro Thermal diffusion tekinoroji

Mhando iyi inosanganisira carburizing, nitriding, boronizing, carbonitriding, sulfur carbonitriding zvichingodaro.

Carburizing uye carbonitriding

Iyo carburizing process inoshandiswa mukutonhora, basa rinopisa uye kusimbiswa kwepamusoro kwepurasitiki molds, iyo inogona kuvandudza hupenyu hwehuku. Semuenzaniso, iyo inofa-casting mold yakagadzirwa ne3Cr2W8V simbi inotanga kupiswa, yozodzimwa pa1140 ~ 1150 ℃, uye kupiswa kaviri pa550 ℃. Iko kuoma kwepamusoro kunogona kusvika HRC56～61, iyo inowedzera kufa-kukanda simbi dzisina-ferrous simbi uye alloys dzadzo ne1.8 ~ 3.0 nguva. . 

Pakuviga, nzira huru dzekuita dzinosanganisira kuomarara kwehupfu, gasi carburizing, vacuum carburizing, ion carburizing, uye carbonitriding inoumbwa nekuwedzera nitrogen kumhepo yakavharisa. Pakati pavo, vacuum carburizing uye ion carburizing matekinoroji akagadzirwa mumakore makumi maviri apfuura. Iyi tekinoroji ine maitiro ekukurumidza carburizing, yunifomu carburizing, yakatsetseka kabhoni yekumisikidza gradient, uye kudiki deformation yeworkpiece. Ichashandiswa pamusoro pehuputi, kunyanya iyo yakanyatsogadzirwa. Ita basa rinowedzera kukosha mukurapa kwepamusoro.

Nitriding uye inoenderana yakaderera-tembiricha yekupisa yekuwedzera tekinoroji

Mhando iyi inosanganisira nitriding, ion nitriding, carbonitriding, oxygen nitriding, sulfur nitriding uye ternary sarufa kabhoni nitriding, oxygen, nitrogen nesurferi. Idzi nzira dzine yakapusa yekugadzirisa tekinoroji, yakasimba kuchinjika, yakaderera diffusion tembiricha, kazhinji 480 ~ 600 ℃, diki deformation yeiyo workpiece, kunyanya inokodzera pamusoro pekusimbisa kweyechokwadi molds, uye kukwirira kuomarara kwe nitride layer, yakanaka yekupfeka kuramba, uye yakanaka Anti -kuomesa mashandiro.

3Cr2W8V simbi die-casting mold, mushure mekudzima uye kupisa uye nitriding pa520～540℃, hupenyu hwesevhisi hwakareba 2 kusvika ku3 nguva kupfuura iyo yeasina-nitriding mold. Mazhinji anofa-anokandira molds akagadzirwa nesimbi yeH13 muUnited States inoda kuve nitrided, uye nitriding inoshandiswa panzvimbo yekupisa kamwe chete. Iko kuomarara kwepamusoro kwakakwira seHRC65～70, nepo musimboti wekuumbwa uine kuomarara kwakaderera uye kuoma kwakanaka, kuitira kuti uwane kubatanidzwa kwakanyanya.

Mechanical properties. Nitriding process inzira inowanzoshandiswa pakurapa kwepamusoro kwefa-casting molds. Zvisinei, kana ganda rakatetepa uye rakachena chena rinoonekwa mu nitrided layer, haigoni kupikisa mhedzisiro yekutsinhanisa kupisa kwemhepo, uye zviri nyore kugadzira micro-cracks uye kuderedza kupisa kuneta kuramba. Naizvozvo, panguva yekuita nitriding, maitiro anofanirwa kudzorwa zvakanyanya kudzivirira chizvarwa che brittle layer. Nyika dzekunze dzinokurudzira kushandisa yechipiri uye yakawanda nitriding maitiro. Iyo nzira yekudzokororwa nitriding inogona kuora chena inopenya nitride layer iyo inotapukira kune microcracks panguva yebasa, kuwedzera ukobvu hweiyo nitriding layer, uye panguva imwechete inoita kuti mold iite yakasara yakasara stress layer, kuitira kuti hupenyu hwe mold inogona kuvandudzwa zvakanyanya. Mukuwedzera, kune nzira dzakadai semunyu yekugezera carbonitriding uye munyu kugeza sulfur nitrocarburizing. 

Maitiro aya anoshandiswa zvakanyanya kune dzimwe nyika uye haawonekwi muChina. Semuenzaniso, iyo TFI + ABI maitiro akanyudzwa mune alkaline oxidizing munyu wekushambidza mushure me nitrocarburizing mubhati remunyu. Pamusoro peiyo workpiece yakasanganiswa uye inoita dema, uye kupfeka kwayo kuramba, kurwisa ngura uye kupisa kupisa kwakagadziridzwa. Hupenyu hwealuminium alloy kufa-kukanda kufa kurapwa nenzira iyi kunowedzerwa nemazana emaawa. Mumwe muenzaniso ndeye oxynit maitiro akagadzirwa muFrance, uko nitrocarburizing inoteverwa ne nitriding inoiswa kune isiri-ferrous simbi kufa-ichikanda maforoma ane mamwe maitiro.

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