热处理
熱處理
열처리
HEAT TREATMENT
2013年
5期
59-65
,共7页
高效%节能%环保%渗碳%渗氮%控制气氛%活性屏
高效%節能%環保%滲碳%滲氮%控製氣氛%活性屏
고효%절능%배보%삼탄%삼담%공제기분%활성병
high efficiency%energy saving%environmental ptotection%carburizing%nitriding%controlled atmosphere%active screen
介绍了四个内容：（1）新型高效、节能、环保渗碳技术，主要包括预抽真空双室多用炉和气氛控制装置，与通常的气体渗碳相比，渗碳速度更快，内氧化、渗碳气体消耗量及 CO2排放量大大减少；（2）控制气氛真空渗碳炉，该炉采用热传导探头和氧探头双探头进行碳势的闭环控制，可实施真空渗碳、气冷、重新加热至850℃淬火的工艺过程，渗层均匀性好，并能有效消除积炭；（3）预抽真空精密控制气氛渗氮炉，该炉采用独特的温度和氮势精确控制系统，可取代QPQ 技术对普通碳钢进行渗氮氧化复合处理，提高其耐磨、耐蚀和疲劳性能；（4）活性屏等离子渗氮技术，其独特之处是，高压直流电源的负极接在真空室内的金属活性屏上，等离子体加热金属屏，由从屏上辐射的热量将工件加热到所需渗氮温度，解决了传统的直流等离子渗氮技术难以克服的工件打弧等问题。
介紹瞭四箇內容：（1）新型高效、節能、環保滲碳技術，主要包括預抽真空雙室多用爐和氣氛控製裝置，與通常的氣體滲碳相比，滲碳速度更快，內氧化、滲碳氣體消耗量及 CO2排放量大大減少；（2）控製氣氛真空滲碳爐，該爐採用熱傳導探頭和氧探頭雙探頭進行碳勢的閉環控製，可實施真空滲碳、氣冷、重新加熱至850℃淬火的工藝過程，滲層均勻性好，併能有效消除積炭；（3）預抽真空精密控製氣氛滲氮爐，該爐採用獨特的溫度和氮勢精確控製繫統，可取代QPQ 技術對普通碳鋼進行滲氮氧化複閤處理，提高其耐磨、耐蝕和疲勞性能；（4）活性屏等離子滲氮技術，其獨特之處是，高壓直流電源的負極接在真空室內的金屬活性屏上，等離子體加熱金屬屏，由從屏上輻射的熱量將工件加熱到所需滲氮溫度，解決瞭傳統的直流等離子滲氮技術難以剋服的工件打弧等問題。
개소료사개내용：（1）신형고효、절능、배보삼탄기술，주요포괄예추진공쌍실다용로화기분공제장치，여통상적기체삼탄상비，삼탄속도경쾌，내양화、삼탄기체소모량급 CO2배방량대대감소；（2）공제기분진공삼탄로，해로채용열전도탐두화양탐두쌍탐두진행탄세적폐배공제，가실시진공삼탄、기랭、중신가열지850℃쉬화적공예과정，삼층균균성호，병능유효소제적탄；（3）예추진공정밀공제기분삼담로，해로채용독특적온도화담세정학공제계통，가취대QPQ 기술대보통탄강진행삼담양화복합처리，제고기내마、내식화피로성능；（4）활성병등리자삼담기술，기독특지처시，고압직류전원적부겁접재진공실내적금속활성병상，등리자체가열금속병，유종병상복사적열량장공건가열도소수삼담온도，해결료전통적직류등리자삼담기술난이극복적공건타호등문제。
The four points introduced are as follows:( a) High efficiency , energy saving and environment friendly gas carburizing technology which includes mainly the pre-vacuating double chamber multi-function furnace with controlled atmosphere and the atmosphere controlling system , and has such advantages as more rapid rate of impregnation of carbon into part , minimum internal oxidation in the case , considerably reduced consumption of carburizing gas and emission of CO 2 relative to conventional gas carburizing practice; ( b ) The controlled atmosphere vacuum carburizing furnace where the both heat conduction probe and oxygen probe are used for closed -loop control of carbon potential , and the heat treatment process consisting of vacuum carburizing , gas cooling , followed by heating to 850 ℃again and quenching can be performed with excellent carburizing uniformity and few sooting; ( c ) Pre-vacuating accurately controlled atmosphere nitriding furnace in which an unique accurate controlling system for temperature and nitrogen potential is adopted , and the combined carburizing-oxidizing process of plain steel can be done instead of QPQ technology to improve on the wear , corrosion and fatigue resistances;( d) Active screen plasma nitriding , an newly developed and technologically advanced nitriding practice . Furthermore, part arcing and other problems difficult to be overcome by conventional dc plama nitriding technology have been solved .
