銑刀、六刃銑刀、RASEM(優(yōu)質(zhì)商家)

銷售：

職位類別：銷售主管 銷售部經(jīng)理 銷售工程師

工作內(nèi)容：1、擔(dān)當(dāng)分板機(jī)/點(diǎn)膠機(jī)設(shè)備的銷售工作；

2、客戶的維護(hù)及市場(chǎng)客戶的開拓。進(jìn)行客戶市場(chǎng)、競(jìng)爭(zhēng)對(duì)手、行業(yè)信息等情況收集；

要求：1、2年以上銷售工作經(jīng)驗(yàn)，1年以上SMT行業(yè)銷售經(jīng)驗(yàn)；

2、具有較強(qiáng)的市場(chǎng)開拓能力及談判能力；

3、有較強(qiáng)的溝通、交際、協(xié)調(diào)能力及團(tuán)隊(duì)精神；良好的個(gè)人信譽(yù)及職業(yè)操守

Job content: 1， bear points machine/dispensing machine equipment sales work;

2， customer maintenance and market development. For customer markets， competitors， industry information， and so on and so forth;

Job requirement: 1， 2 years or above sales working experience， 1 years sales experience in SMT industry;

2，全鎢鋼銑刀， with strong market development ability and negotiation skills;

3， have strong ability of communication， communication， coordination and team spirit; Good personal reputation and ethics

電路板本身的重量會(huì)造成板子凹陷變形

   一般回焊爐都會(huì)使用鏈條來(lái)帶動(dòng)電路板于回焊爐中的前進(jìn)，也就是以板子的兩邊當(dāng)支點(diǎn)撐起整片板子，如果板子上面有過(guò)重的零件，或是板子的尺寸過(guò)大，就會(huì)因?yàn)楸旧淼姆N量而呈現(xiàn)出中間凹陷的現(xiàn)象，全自動(dòng)磨刀機(jī)銑刀，造成板彎。

   V-Cut的深淺及連接條會(huì)影響拼板變形量

   基本上V-Cut就是破壞板子結(jié)構(gòu)的元兇，因?yàn)閂-Cut就是在原來(lái)一大張的板材上切出溝槽來(lái)，所以V-Cut的地方就容易發(fā)生變形。

2.1 壓合材料、結(jié)構(gòu)、圖形對(duì)板件變形的響分析

   PCB板由芯板和半固化片以及外層銅箔壓合而成，其中芯板與銅箔在壓合時(shí)受熱變形，變形量取決于兩種材料的熱膨脹系數(shù)（CTE）

   銅箔的熱膨脹系數(shù)（CTE）為17X10-6左右；

   而普通FR-4基材在Tg點(diǎn)下Z向CTE為（50~70）X10-6；

   TG點(diǎn)以上為（250~350）X10-6，X向CTE由于玻璃布存在，一般與銅箔類似。

別是生產(chǎn)關(guān)鍵應(yīng)用領(lǐng)域的產(chǎn)品的市場(chǎng)里，銑刀，此類故障的后果不堪設(shè)想。

  對(duì)比PCB價(jià)格時(shí)，應(yīng)牢記這些方面。雖然可靠、有保證和長(zhǎng)壽命產(chǎn)品的初期費(fèi)用較高，但從長(zhǎng)期來(lái)看還是物有所值

On the surface of PCB， regardless of inner quality. It is through the surface， we didn't see the difference， and the differences of PCB in durability and functionality is crucial in the whole life. In both manufacturing assembly process and in actual use，六刃銑刀， the PCB must have reliable performance， it is very important. In addition to the relevant cost， the defects in the process of assembly into the final product may be covered by PCB， failure may occur in the process of actual use， result in a claim against you. In that sense， therefore， can never to say that the cost of a high quality PCB is negligible.

In all market segments， especially in the production of key application in the field of product in the market， the consequences of such failure.

Compare the price of PCB， should remember these aspects. Although reliable， guaranteed and the beginning of the long life product cost is higher， but in the long run or value