国产精品久久久久久久久,四季AV一区二区夜夜嗨,日韩精品无码中文字幕电影,www.五月婷婷.com

鏉愭枡鍚嶇ū锛氶珮閫熷伐鍏烽嫾
鐗岃櫉锛欿M-2
妯欐簴锛欵N ISO 4957-1999
鈼忓寲瀛告垚浠斤細
纰� C 锛�0.80锝�0.88               
纭� Si锛�0.20锝�0.45               
閷� Mn锛�0.15锝�0.40                  
纭� S 锛氣墹0.030             
纾� P 锛氣墹0.030
閴� Cr锛�3.80锝�4.50                   
閲� V 锛�1.70锝�2.10          
閴� Mo锛�4.70锝�5.20              
閹� W 锛�5.90锝�6.70          
V锛�1.70锝�2.10            
鈼忓姏瀛告€ц兘锛�
纭害 锛氫氦璨ㄧ‖搴�:(鍏朵粬鍔犲伐鏂规硶)鈮�262HB锛� (閫€鐏�)鈮�255HB銆傝│妯ｇ啽铏曠悊鍒跺害鍙婃番鍥炵伀纭害:鈮�63HRC(绠卞紡鐖�)銆佲墺64HRC(楣芥荡鐖�)
鈼忕啽铏曠悊瑕�(gu墨)鑼冨強閲戠浉绲勭箶锛�
鐔辫檿鐞嗚(gu墨)鑼冿細娣伀,730锝�840鈩冮爯鐔�锛�1210锝�1230鈩�(楣芥荡鐖�)鎴�1210锝�1230鈩�(绠卞紡鐖�)鍔犵啽锛屾补鍐凤紝540锝�560鈩冨洖鐏�2娆�锛屾瘡娆�2h銆�
鈼忎氦璨ㄧ媭鎱�(t脿i)锛氱啽杌�銆侀崨鍒�銆佸喎鎷夐嫾妫掍互閫€鐏媭鎱�(t脿i)浜よ波锛岀啽杌�銆侀崨鍒堕嫾妫掍互閫€鐏紜鍏朵粬鍔犲伐鏂规硶锛堝墲鐨�銆佽紩鎷�銆佺（鍏夋垨鎷嬪厜绛夛級鍔犲伐鍚庝氦璨�銆�