山西焦煤科技
山西焦煤科技
산서초매과기
SHANXI COKING COAL SCIENCE & TECHNOLOGY
2014年
5期
16-18
,共3页
27 SiMn钢%硬度不均匀%调质%淬火硬度
27 SiMn鋼%硬度不均勻%調質%淬火硬度
27 SiMn강%경도불균균%조질%쉬화경도
27 SiMn steel%Nonuniform hardness%Quenching and tempering%Quenching hardness
27 SiMn钢经过调质处理后，可以满足支架使用的力学性能，但在调质过程中，由于工件过长，使得淬火后缸筒硬度上下不均匀，从而增加缸筒在加工中的难度，经常出现镗床镗刀断裂，镗头卡在缸筒中等现象，造成人工和材料的浪费，也降低了缸筒的使用寿命。为了改善缸筒硬度上下不均匀的缺陷，通过改善调质工艺达到缸筒上下硬度基本一致，以满足缸筒的加工和使用要求。
27 SiMn鋼經過調質處理後，可以滿足支架使用的力學性能，但在調質過程中，由于工件過長，使得淬火後缸筒硬度上下不均勻，從而增加缸筒在加工中的難度，經常齣現鏜床鏜刀斷裂，鏜頭卡在缸筒中等現象，造成人工和材料的浪費，也降低瞭缸筒的使用壽命。為瞭改善缸筒硬度上下不均勻的缺陷，通過改善調質工藝達到缸筒上下硬度基本一緻，以滿足缸筒的加工和使用要求。
27 SiMn강경과조질처리후，가이만족지가사용적역학성능，단재조질과정중，유우공건과장，사득쉬화후항통경도상하불균균，종이증가항통재가공중적난도，경상출현당상당도단렬，당두잡재항통중등현상，조성인공화재료적낭비，야강저료항통적사용수명。위료개선항통경도상하불균균적결함，통과개선조질공예체도항통상하경도기본일치，이만족항통적가공화사용요구。
27 SiMn steel can satisfy the mechanical property of support used after quenching and tempering,but in the quenching and tempering process,due to the workpiece is too long,the up and down hardness of cylinder is nonuniform,increases the difficulty of processing cylinder.It often has problems that boring mill and boring cutter break,boring head get stuck in cylinder and so on.Causes the waste of labor and material,also reduces service life of cylinder.In order to reform the defect of which up and down hardness of cylinder is nonuniform,by improving quenching and tempering technology make the hardness of cylinder reach same,satisfies the processing requirement and operating requirements of cylinder.
