【正文】 s capability of independent innovation, promote and enhance the use of information technology, industrial manufacturing tooling technology, active use of high technology and advanced applicable technologies to improve the overall level of the industry. China39。 by export supply to points of export die mainly from Guangdong, Zhejiang and Jiangsu. Analysis of import and export prices from the mold. Export stamping die in 2009 $ 8, per ton price. Increased by % over the previous year。推動(dòng)我國(guó)模具工業(yè)技術(shù)進(jìn)步再上新臺(tái)階，將是我國(guó)模具行業(yè)發(fā)展的一個(gè)重要任務(wù)。在這種情況下，如模具設(shè)計(jì)不合理或沒(méi)有安全防護(hù)裝置，就極易發(fā)生人身安全事故。如在沖裁模中由于裝配間隙不均勻，在剪切力作用下常會(huì)使凹?？袎亩绊憶_模壽命。在模具制造加工過(guò)程中，必須嚴(yán)格保證模具的尺寸形狀精度，避免留下機(jī)加工刀痕；過(guò)渡部分要平滑，不能有微小缺陷，防止使用過(guò)程中出現(xiàn)應(yīng)力集中裂紋。理想的間隙應(yīng)該是板料沖裁斷裂時(shí)，凸凹模刃口邊所產(chǎn)生的裂紋在一條直線上，否則沖片邊緣將出現(xiàn)不允許的毛刺，使得刃口粘結(jié)嚴(yán)重，磨損加快，進(jìn)而影響模具的壽命。但由于模具材料、機(jī)械加工等一系列內(nèi)外因素的影響，企業(yè)生產(chǎn)中經(jīng)常導(dǎo)致模具過(guò)早失效而報(bào)廢，造成浪費(fèi)并可能影響到倉(cāng)業(yè)的正常生產(chǎn)。一般在20％一30％。例如對(duì)模具的復(fù)雜型面、深窄小型腔、尖角、窄縫、溝槽、深坑等處的加工，EDM有其無(wú)可比擬的優(yōu)點(diǎn)。三、冷沖模具的發(fā)展方向發(fā)展模具工業(yè)的關(guān)鍵是制造模具的技術(shù)、相關(guān)人才以及模具材料。根據(jù)中國(guó)模具工業(yè)協(xié)會(huì)的統(tǒng)計(jì)數(shù)據(jù)，2009年中國(guó)模具進(jìn)出口總額為38．07億美元，比上年下降3．03％。設(shè)計(jì)人員改進(jìn)制模工藝，具有自動(dòng)送料、自動(dòng)理片和接料裝置的復(fù)合模具大量問(wèn)世。由于生產(chǎn)力較為低下，技術(shù)水平不夠．當(dāng)時(shí)各廠使用的沖壓設(shè)備功率都不大，甚至大多還是手扳腳踏。目前，模具制造業(yè)已成為與高新技術(shù)產(chǎn)業(yè)互為依托的產(chǎn)業(yè)，模具工業(yè)技術(shù)水平的高低已成為衡量國(guó)家制造業(yè)水平的重要標(biāo)志之一。對(duì)任何國(guó)家來(lái)說(shuō)，制造產(chǎn)業(yè)是綜合國(guó)力及技術(shù)水平的體現(xiàn)．而模具行業(yè)的發(fā)展是制造產(chǎn)業(yè)的基礎(chǔ)和關(guān)鍵。模具加工業(yè)以手工為主，故而模具的精度不高，損壞率大?？磕ｃ姶惨M(jìn)后，用石膏、術(shù)?；?qū)嵨锛纯煞瞥鱿嗤螤畹哪Ｐ荆箯?fù)合托深模具的制作方便了許多，確保了精度。其中進(jìn)口總額為19．64億美元，同比減少2％；出口總額為18．43億美元，同比減少4．1l％。模具技術(shù)的發(fā)展是模具工業(yè)發(fā)展最關(guān)鍵的—個(gè)因素，其發(fā)展方向應(yīng)該為適應(yīng)模具產(chǎn)品“交貨期短”、“精度高”、“質(zhì)量好”和“價(jià)格低”的要求服務(wù)。復(fù)雜、精密小型腔及微細(xì)型腔和去除刀痕、完成尖角、窄縫、溝槽、深坑加工及花紋加工等，將是今后EDM應(yīng)用的重點(diǎn)。因此，十分有必要選用優(yōu)質(zhì)鋼材和應(yīng)用表面處理技術(shù)來(lái)提高模具的壽命。實(shí)際生產(chǎn)中沖模的失效現(xiàn)象相當(dāng)頻繁，沖模消耗量大。對(duì)于沖裁模具有研究表明：在保證沖裁工件質(zhì)量的前提下，沖裁模具應(yīng)盡可能選用較大的沖裁間隙，以降低沖裁力，減小模具的磨損從而能提高模具使用壽命。電加工及磨削加工后應(yīng)進(jìn)行回火，以消除加工應(yīng)力。同時(shí)，沖模表面光潔度過(guò)低，也會(huì)使沖模的耐用度降低。五、結(jié)語(yǔ)模具技術(shù)水平的高低是衡量一個(gè)國(guó)家制造業(yè)水平的重要標(biāo)志之一。附錄BDevelopment of cold stamping die Mold is an integral part of hightech industry is an important foundation for industrial production equipment. Produced by mold, the mold is often worth its valueseveral times. Mold Technology is a technology based on integrated technology, precision equipment, strong technology, involving new technologies, new processes, new materials, new equipment development and application. Metallurgy, materials, measurement, mechanical and electrical integration, puter and other subjects as well as casting, forging, heat treatment, machining, testing, and many other types of work together to build the system the mold products with high efficiency, low consumption, high consistency, precision and high plexity of features, this is in any other manufacturing methods can not reach. At present, the mold manufacturing industry has bee a hightech industries rely on each other with the industry, mold The level of industrial technology has bee an important measure of national manufacturing level one of the signs. Of any country, manufacturing industry is the level of overall national strength and technical expression. The mold industry is the foundation and key manufacturing industries. In response, the state has adopted corresponding policies, are actively developing mold making industry. I. Die with a long history of industrial Cold stamping process in China has a long history. According to historical records: the working people as far away as China discovered the Bronze Age with the hammering deformation properties of the metal, to the Warring States Period (403 BC, a former 221) has been refining the sword can be ancestors 2,300 years ago has acquired weapons and various metal hammering modity technology. During the long period of feudal society, our working people in the gold, silver, copper ornaments, and the production of daily necessities, but also shows sophisticated superb artistic level, it is amazing. In modern times, from the last century 2039。 exports of plastic rubber mold the average price of $ 963 each, up % over the previous year. If pared with the import price, import and export stamping die per ton ratio :1。s mold industry to make large, sophisticated, plex, high efficiency, long life and multifunction. China39。s industrial sector to the large mold, precision, plex, efficient, long life and multifunction. Article history starting from the mold, summarized the development of the domestic cold stamping die situation. Discusses the development of the domestic cold stamping die mold industry in China although the new direction has been greatly developed, but the whole, the technology is still lagging behind pared to 1520 years of industrial countries, which is pared to the requirements of manufacturing industry still a big gap. In order to promote the socialist modernization drive, to adapt to the needs of the development of national economic sectors, the need for further technical tooling industry structure and speed up the localization. Should therefore be based on national conditions, focusing on the develo