Journal of Mechanical Engineering Science and Technology最新文献_第5页

Study on Surface Roughness in Micro Milling of Single Crystal Materials 单晶材料微铣削表面粗糙度研究

Journal of Mechanical Engineering Science and Technology Pub Date : 2019-07-22 DOI: 10.33142/me.v1i1.656

Q. Gao, P. Jin, G. Guo

引用次数: 0

Strength Evaluation of a Bogie Frame by Different Methods 用不同方法评价转向架框架的强度

Journal of Mechanical Engineering Science and Technology Pub Date : 2019-07-22 DOI: 10.33142/ME.V1I1.662

Daoyun Chen, Shou-guang Sun, Qiang Li

引用次数: 4

Design of New Elevator Pressure Guide Plate and Its Test Device 新型电梯导压板及其试验装置的设计

Journal of Mechanical Engineering Science and Technology Pub Date : 2019-07-22 DOI: 10.33142/ME.V1I1.655

Qihang Xu, Shaoke Chen

引用次数: 0

Study on Vertical Vibration Characteristics of the 2-DOF Strip Rolling Mill Model with a Single Weak Defect on the Work Roll Bearing Outer Raceway 工作辊轴承外滚道存在单一弱缺陷的2自由度带钢轧机模型垂直振动特性研究

Journal of Mechanical Engineering Science and Technology Pub Date : 2019-07-22 DOI: 10.33142/ME.V1I1.664

Zhengnan Sun, Dong-xiao Hou, Liang Xu, P. Shi

{"title":"Study on Vertical Vibration Characteristics of the 2-DOF Strip Rolling Mill Model with a Single Weak Defect on the Work Roll Bearing Outer Raceway","authors":"Zhengnan Sun, Dong-xiao Hou, Liang Xu, P. Shi","doi":"10.33142/ME.V1I1.664","DOIUrl":"https://doi.org/10.33142/ME.V1I1.664","url":null,"abstract":"Considering the influence caused by a early single pit defect on the outer raceway of the work roll bearing, a 2-DOF plate strip rolling mill vertical vibration model with a single point weak fault on the outer raceway was established. With the practical parameters of the roughing mill of the 1780 hot continuous rolling mill, the vertical vibration characteristics of the rolling mill work roll with different rotating speed and different single pit defect area on the bearing outer raceway are analyzed by numerical simulation. It is found that with the change of the rotation speed of the work roll, different nonlinear vibration behaviors occurred, such as superharmonic resonance, main resonance, combined resonance and sub-harmonic resonance. Especially the subharmonic resonance of the work roll is more harmful than the main resonance when the work roll speed is twice the rotation speed corresponding to the first and second natural frequency of the rolling mill. This work provides a theoretical basis for further clarifying the effect caused by a early defect of the work roll bearing on the mill vibration.","PeriodicalId":16315,"journal":{"name":"Journal of Mechanical Engineering Science and Technology","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82903163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cement Pavement Surface Crack Detection Based on Image Processing 基于图像处理的水泥路面表面裂缝检测

Journal of Mechanical Engineering Science and Technology Pub Date : 2019-07-22 DOI: 10.33142/me.v1i1.661

H. Lei, Jianlian Cheng, Qi Xu

引用次数: 2

Design and selection of servomotor for radial aircraft tire secondary molding machine 航空子午线轮胎二次成型机伺服电机的设计与选择

Journal of Mechanical Engineering Science and Technology Pub Date : 2019-07-22 DOI: 10.33142/me.v1i1.657

Chaoqun Wang

引用次数: 0

Optimization of the Hot Pressing Process for Preparing Flax Fiber/PE Thermoplastic Composite 亚麻纤维/PE热塑性复合材料热压工艺的优化

Journal of Mechanical Engineering Science and Technology Pub Date : 2019-07-22 DOI: 10.33142/ME.V1I1.660

Yi-qi Wang, Guangpeng Cui, Zhu-Bao Shao, Y. Bao, Hang Gao

引用次数: 4

The Additive Manufacturing Process of Electric Power Fittings Fabricated by Metal Droplet Deposition 金属液滴沉积增材制造电力配件的工艺研究

Journal of Mechanical Engineering Science and Technology Pub Date : 2019-07-22 DOI: 10.33142/ME.V1I1.658

Haihua Wu, Guangxi Zhao, Zhengying Wei

{"title":"The Additive Manufacturing Process of Electric Power Fittings Fabricated by Metal Droplet Deposition","authors":"Haihua Wu, Guangxi Zhao, Zhengying Wei","doi":"10.33142/ME.V1I1.658","DOIUrl":"https://doi.org/10.33142/ME.V1I1.658","url":null,"abstract":"Metal droplet deposition is a kind of additive manufacturing (3D Printing) technique that fabricates near-net part through droplets deposition with lower cost and higher efficiency. This paper proposed a solution to problems of electric power fittings that large inventories, high procurement costs, low manufacturing efficiency and transportation cost. Using additive Manufacturing technique - metal droplet deposition, electric power fittings fabricated on power construction site. This paper describes the manufacturing process of typical thin-walled samples (the structure optimized based on additive manufacturing principle) and ball head rings of electric power fittings. Aiming at the integral AM forming for ball and ball socket electric power fitting workpiece, a novel easy removal forming support material (ceramics and gypsum mixed with UV cured resin) have been developed. Here this support material was used to fabricate nested integral workpieces. Dimensional accuracy and microstructure of the test pieces were analyzed. The error of the height and width of the forming workpiece is within 5%. No obvious overlap trace (such as overlap line and cracks) observed, and the internal microstructure is equiaxial crystal. The average density of the component is 99.51%, which measured by drainage method and 13.39% higher than the cast raw material.","PeriodicalId":16315,"journal":{"name":"Journal of Mechanical Engineering Science and Technology","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77345556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of Casting Defect, Tensile Strength, and Hardness of Al-Si Casting Alloy with Percentage Variation of Clay Binder Bangkalan 粘土粘结剂Bangkalan百分比变化对Al-Si铸造合金铸造缺陷、抗拉强度和硬度的分析

Journal of Mechanical Engineering Science and Technology Pub Date : 2018-10-08 DOI: 10.17977/UM016V2I22018P043

Imam Muhtarom, Sunomo Sunomo

{"title":"Analysis of Casting Defect, Tensile Strength, and Hardness of Al-Si Casting Alloy with Percentage Variation of Clay Binder Bangkalan","authors":"Imam Muhtarom, Sunomo Sunomo","doi":"10.17977/UM016V2I22018P043","DOIUrl":"https://doi.org/10.17977/UM016V2I22018P043","url":null,"abstract":"Casting is one of method that used in forming the work piece by melting specific metal and pouring into moulding that has been prepared. This study aimed to determine the effect of the use of Bangkalan clay as binder in sand moulding against tensile strength, hardness, and defects in Al-Si casting alloy by using gravity casting method. The method used in this study was experimental method then using descriptive analysis. Descriptive analysis included explanation of the test result of tensile strength, hardness, and the type of surface defect of Al-Si casting. Based on the research result obtained the highest shear strength in wet condition obtained on sand moulding which had the highest tensile strength, that was sand moulding with composition of 12% Bangkalan clay, and 0.5% bentonite. While the highest hardness value of Al-Si casting result obtained on specimen with variation of 12% Bangkalan clay with the value of 131.9 HV. Casting defects that appeared on the surface of all casting product variations. The defects that found were fin defects, pinhole defects, sand loss defects, and surface roughness. Based on the result above, could be concluded that variation of 9% Bangkalan clay and 0.5% bentonite as binder was the best variation.","PeriodicalId":16315,"journal":{"name":"Journal of Mechanical Engineering Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45594446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of Hardness, Quality and Fluidity Al-Si Casting Result by Using Clamshell (Placuna placenta) as The Mixture of Sand Moulding 蛤壳（Placuna胎盘）混合砂型铸造铝硅合金的硬度、质量和流动性分析

Journal of Mechanical Engineering Science and Technology Pub Date : 2018-10-08 DOI: 10.17977/UM016V2I22018P074

S. S. Zahari, Saif Aziz Saputra, Putut Murdanto

{"title":"Analysis of Hardness, Quality and Fluidity Al-Si Casting Result by Using Clamshell (Placuna placenta) as The Mixture of Sand Moulding","authors":"S. S. Zahari, Saif Aziz Saputra, Putut Murdanto","doi":"10.17977/UM016V2I22018P074","DOIUrl":"https://doi.org/10.17977/UM016V2I22018P074","url":null,"abstract":"Metal is an element that cannot be separated from human life. Almost all of human activities includes metal element in it. Metals can be formed through several ways, one of which is metal casting. Metal casting is one of technique in producing products where the metal was melted in crucible and then poured in a moulding which is similar to the original shape of the product. Moulding that are commonly used are sand moulding. Commonly, binder which used in sand casting process is bentonite. Bentonite, was kind of mineral which can be run out during its usage. This study aimed to analyse the alternative binder to reduce the usage of bentonite. This study analysed the using of clamshell as the mixture of moulding sand against the hardness, quality and fluidity of Al-Si casting result. The highest hardness value was found at the specimen with the mixture of 11% clamshells with an average hardness value of 122.96 HV. The highest value of fluidity also presented in the specimen which used mixture of 11% clamshells that resulted the length of specimen at 789 mm. Based on the analysis of casting defect showed that specimen which used 5% clamshells had the fewest and the smallest defect compared the other specimens.","PeriodicalId":16315,"journal":{"name":"Journal of Mechanical Engineering Science and Technology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46834467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0