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42crmo鏃犵紳閽㈢鏄緷闈犺皟鏁村惈紕?C)閲忔潵鏀瑰杽閽㈢殑鍔涘鎬ц兘錛屽洜姝わ紝鏍規嵁鍚⒊閲忕殑楂樹綆錛屾綾婚挗鍙堝彲鍒嗕負錛?浣庣⒊閽?-鍚⒊閲忎竴鑸皬浜?.25%錛屽10銆?0閽㈢瓑;
涓⒊閽?-鍚⒊閲忎竴鑸湪0.25锝?.60%涔嬮棿錛屽35銆?5閽㈢瓑; 楂樼⒊閽?-鍚⒊閲忎竴鑸ぇ浜?.60%銆傛綾婚挗涓�鑸笉鐢ㄤ簬鍒墮�犻挗綆°�?/p> 銆�銆�鏃犳槑鏄劇殑鍥炵伀鑴嗘�?娣伀鏃跺彉褰㈠皬,42crmo鏃犵紳閽㈢璋冭川澶勭悊鍚庢湁杈冮珮鐨勭柌鍔蟲瀬闄愬拰鎶楀嬈″啿鍑昏兘鍔?浣庢俯鍐插嚮闊у害鑹ソ,楂樻俯鏃舵湁楂樼殑锠曞彉寮哄害鍜屾寔涔呭己搴︺�?2crmo鏃犵紳閽㈢閫氬父灝嗚皟璐ㄥ悗琛ㄩ潰娣伀浣滀負鐑鐞嗘柟妗堛�?/p> 銆�銆�鏍規嵁鏍囧噯GB/T 3077-1999,42crmo鏃犵紳閽㈢鐨勫寲瀛︽垚鍒?璐ㄩ噺鍒嗘暟): Ni鈮?.030%銆丳鈮?.030%銆丼鈮?.030% 銆�銆�42crmo鏃犵紳閽㈢涓洪挗鏉愪腑鐨勪竴縐嶆潗璐ㄣ�傝繃鍘婚挗鏉愮殑涓�縐嶅彨娉曘�傜О娉曚負錛歈345B錛屼笌姝ょ浉榪戠殑鏉愯川涓篞345a錛孮345c錛孮345e錛岃川閲忕瓑綰х鍙稟 B
C D E 鍒嗗埆琛ㄧず涓嶈姹傚啿鍑昏瘯楠?鍐插嚮璇曢獙娓╁害涓?20搴?0搴?-20搴?40搴?銆�ABCD琛ㄧず璐ㄩ噺絳夌駭
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A鈥斺�旀彁渚汼銆丳銆丆銆丮n銆丼i鍖栧鎴愬垎鍜宖u銆乫y銆佄?(未10)錛屾牴鎹拱鏂歸渶瑕佸彲鎻愪緵1800鍐峰集璇曢獙錛屼絾鏃犲啿鍑誨姛瑙勫畾錛屽惈鐐噺鍜屽惈閿伴噺涓嶄綔涓轟氦璐ф潯浠躲�?
B鈥斺�旀彁渚汼銆丳銆丆銆丮n銆丼i鍖栧鎴愬垎鍜宖u銆乫y銆佄?(未10)錛屽喎寮?80鈥樿瘯楠屻�傝繕鎻愪緵+200C鏃跺啿鍑誨姛Ak鈮?7J
C鈥斺�旈櫎涓嶣綰ц姹備竴鏍峰錛岃繕鎻愪緵00C鏃跺啿鍑誨姛Ak鈮?7J銆?D----闄や笌B綰ц姹備竴鏍峰錛岃繕鎻愪緵-200C鏃跺啿鍑誨姛Ak鈮?7J
E鈥斺�旈櫎涓嶣綰ц姹備竴鏍峰錛岃繕鎻愪緵-400C鏃跺啿鍑誨姛Ak鈮?7J銆?/p>
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