簡單说(shuō)说(shuō)鎢鋼(gāng)加工鎢鋼(gāng)材料的導热性(xìng)有(yǒu)那(nà)些(xiē)？

我(wǒ)们(men)了(le)解(jiě)到(dào)鎢鋼(gāng)加工鎢鋼(gāng)材料合金的韌性(xìng)與(yǔ)钴的含量(liàng)有(yǒu)关，含钴量(liàng)高(gāo)，韌性(xìng)就(jiù)好(hǎo)（如(rú)YG8比YG3韌性(xìng)好(hǎo)）；粗(cū)颗粒(lì)碳化(huà)鎢合金又比细(xì)颗粒(lì)合金韌性(xìng)好(hǎo)。我(wǒ)们(men)就(jiù)可(kě)以(yǐ)把(bǎ)含钴量(liàng)多(duō)的鎢鋼(gāng)刀(dāo)片(piàn)應(yìng)用于(yú)粗(cū)加工，以(yǐ)抵抗較大(dà)的切(qiè)削沖擊力；把(bǎ)含钴量(liàng)低(dī)的或(huò)细(xì)颗粒(lì)的鎢鋼(gāng)刀(dāo)片(piàn)用于(yú)精加工。再如(rú)，针对(duì)鎢鋼(gāng)合金在(zài)低(dī)温(wēn)和(hé)高(gāo)温(wēn)时(shí)对(duì)沖擊都非(fēi)常敏感的特(tè)點(diǎn)，在(zài)焊接鎢鋼(gāng)刀(dāo)片(piàn)时(shí)，不(bù)可(kě)对(duì)鎢鋼(gāng)刀(dāo)片(piàn)作(zuò)沖擊性(xìng)的壓緊。另(lìng)外(wài)，还要(yào)做到(dào)正(zhèng)确地(dì)刃磨，不(bù)要(yào)使鎢鋼(gāng)刀(dāo)片(piàn)産生(shēng)网(wǎng)狀裂紋，网(wǎng)狀裂紋会(huì)使鎢鋼(gāng)刀(dāo)片(piàn)的抗彎強(qiáng)度(dù)大(dà)約降低(dī)1／2。

鋼(gāng)材的導热性(xìng)用導热率来(lái)表(biǎo)示。鎢鋼(gāng)材料的導热率比一(yī)船鋼(gāng)材低(dī)。合金的導热率與(yǔ)含钴有(yǒu)一(yī)定(dìng)关系(xì)鎢鋼(gāng)加工，YT合金的導热率又比YG合金低(dī)得多(duō)。在(zài)切(qiè)削加工中(zhōng)，这一(yī)性(xìng)能(néng)具有(yǒu)很重(zhòng)要(yào)的意(yì)義。大(dà)家(jiā)知道(dào)，切(qiè)削过(guò)程中(zhōng)所(suǒ)産生(shēng)的热量(liàng)主(zhǔ)要(yào)是(shì)散(sàn)布(bù)于(yú)鎢鋼(gāng)刀(dāo)具、切(qiè)屑和(hé)所(suǒ)加工的零(líng)件(jiàn)上(shàng)。热量(liàng)的散(sàn)布(bù)过(guò)程與(yǔ)鎢鋼(gāng)刀(dāo)具的導热率有(yǒu)很大(dà)关系(xì)。如(rú)果(guǒ)鎢鋼(gāng)刀(dāo)具的導热率很大(dà)时(shí)，极(jí)大(dà)部(bù)分(fēn)的热量(liàng)傳給(gěi)鎢鋼(gāng)刀(dāo)具，极(jí)小部(bù)分(fēn)傳給(gěi)切(qiè)屑。而當鎢鋼(gāng)刀(dāo)具的導热率小时(shí)，热量(liàng)就(jiù)可(kě)大(dà)部(bù)集中(zhōng)于(yú)切(qiè)屑上(shàng)，使切(qiè)屑受到(dào)強(qiáng)热而软(ruǎn)化(huà)，有(yǒu)利于(yú)切(qiè)削加工的顺利迎行。YT合金合有(yǒu)大(dà)量(liàng)的碳化(huà)鑽(zuàn)，導热率比鎢钴合金小，所(suǒ)以(yǐ)用鎢鋼(gāng)来(lái)切(qiè)削鋼(gāng)材。

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