CAJ | 학술논문

为了提高碳钢铸造阀体内部的耐腐蚀性能，需要在其内表面堆焊耐腐蚀层。对DN500阀体进行三维实体建模，估算出阀体质量及内表面积。设计了阀体内表面的堆焊工艺，通过堆焊厚度和内表面积估算出焊条用量，又设计了阀体配合面的堆焊与加工工艺，对加工尺寸链进行计算，既保证了配合精度，又保证了耐腐蚀层的厚度。结果表明，通过对大型阀门的三维建模，估算制造成本的方法是可行的并具有实际工程意义；配合表面的堆焊与加工工艺能够在保证耐腐蚀层厚度的基础上达到配合要求；采用普通铸钢并堆焊耐腐蚀层制造的阀体，比全不锈钢阀体成本可降低30%以上。
위료제고탄강주조벌체내부적내부식성능，수요재기내표면퇴한내부식층。대DN500벌체진행삼유실체건모，고산출벌체질량급내표면적。설계료벌체내표면적퇴한공예，통과퇴한후도화내표면적고산출한조용량，우설계료벌체배합면적퇴한여가공공예，대가공척촌련진행계산，기보증료배합정도，우보증료내부식층적후도。결과표명，통과대대형벌문적삼유건모，고산제조성본적방법시가행적병구유실제공정의의；배합표면적퇴한여가공공예능구재보증내부식층후도적기출상체도배합요구；채용보통주강병퇴한내부식층제조적벌체，비전불수강벌체성본가강저30%이상。
The corrosion resistance layers can be surfaced in the valve casted by carbon steel , to enhance the corrosion resistance performance. By the 3D solid model, the weight and internal area of valve body was obtained. The surfacing process was designed and the welding rods theory amount was calculated through welding thickness and internal area. The surfacing and cutting process was designed for the fit surfaces and the dimension chain was calculated to meet the fit accuracy and the corrosion resistance layer thickness. The results showed that it has the engineering significance by using 3D solid model to estimate the producing costs; the fit accuracy and the corrosion resistance layer thickness can be obtained together based on the surfacing and cutting process; in this way, the cost can be cut down more than 30%, compared the whole stainless steel valve.