Technology reports of the Yamaguchi University最新文献

A Leaf-Size Hierarchy of Three-Dimensional Alternating Turing Machines 三维交替图灵机的叶级结构

Technology reports of the Yamaguchi University Pub Date : 1996-12-01 DOI: 10.1016/B978-0-12-386870-1.50027-7

M. Sakamoto, Katsushi Inoue, A. Ito

引用次数: 3

Fluid Forces Acting on a Circuler Cylinder with Single Semi-Circuler Cylindrical Tripping Wire 作用在带有单根半圆圆柱脱扣线的圆柱上的流体力

Technology reports of the Yamaguchi University Pub Date : 1994-02-28 DOI: 10.2208/PROHE.38.469

T. Saitou, Akira Norikoshi, Yoshio Tawa, T. Akamatsu

引用次数: 0

Rotational Isomerism in Fluorene Derivatives XIV Conformational Equilibria of 9-Substituted 9-(2-Cyanomethylphenyl) fluorene Derivatives 芴衍生物的旋转异构十四。9-取代9-(2-氰甲基苯基)芴衍生物的构象平衡

Technology reports of the Yamaguchi University Pub Date : 1988-12-01 DOI: 10.1246/BCSJ.62.2093

A. Nishida, S. Shirakawa, Toshinao Harada, S. Fujisaki, S. Kajigaeshi

引用次数: 0

On the Wear of Carbide Tools in Machining Cast Iron Roll : The Relation between Microstructure and Tool Wear 硬质合金刀具在铸铁轧辊加工中的磨损:显微组织与刀具磨损的关系

Technology reports of the Yamaguchi University Pub Date : 1987-12-01 DOI: 10.2493/JJSPE1933.42.539

R. Kitagawa

{"title":"On the Wear of Carbide Tools in Machining Cast Iron Roll : The Relation between Microstructure and Tool Wear","authors":"R. Kitagawa","doi":"10.2493/JJSPE1933.42.539","DOIUrl":"https://doi.org/10.2493/JJSPE1933.42.539","url":null,"abstract":"Carbide tools for machining rolls are apt to be fractured at the cutting edge. Therefore, the carbide grades of WC-Co having low contents of TiC, TaC, Co, low transversal rupture strength and high hardness are generally used. Predominant cause of the tool wear when cutting of rolls of high hardness is considered to be falling off of carbide particles which slowed out of the tools by the hard particles exclosed to the bottom side of the chips and those to the surface machined. Therefore, the relation between the mean free path of Co-phase and grain size in microstructures of carbide tool and the tool wear is investigated, additionally including that with carbon steels and cement-mortar as materials cut. The following are found. The shorter the length of mean free path is the case of the predominant cause of wear that is the abrasion type as in the machining of rolls, and the larger the mean grain size is in the case of that of the attrition type as in the machining of carbon steel, the longer tool life is obtained respectively. And the adaptability of carbide tools for the machining of rolls can be examined simply by the machining of cement-mortar.","PeriodicalId":341160,"journal":{"name":"Technology reports of the Yamaguchi University","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131051978","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

Point Resistance of Piles in Sand 砂土中桩的点阻力

Technology reports of the Yamaguchi University Pub Date : 1983-12-01 DOI: 10.1016/0148-9062(90)90325-v

N. Miura

引用次数: 16

An X-ray Study on the Relation Between Hydrogen Embrittlement and Sulphonic Stress Corrosion in High Tension Steel 高压钢氢脆与硫酸盐应力腐蚀关系的x射线研究

Technology reports of the Yamaguchi University Pub Date : 1972-12-01 DOI: 10.2472/JSMS.20.1314

K. Kamachi, N. Tani

{"title":"An X-ray Study on the Relation Between Hydrogen Embrittlement and Sulphonic Stress Corrosion in High Tension Steel","authors":"K. Kamachi, N. Tani","doi":"10.2472/JSMS.20.1314","DOIUrl":"https://doi.org/10.2472/JSMS.20.1314","url":null,"abstract":"It is the object of the present study to clarify the relations in respect of behaviors between the hydrogen detected by the X-ray line profiles in high tension steels, in the class of 80kg/mm2 charged by cathodic hydrogen, and the hydrogen in the steel immersed in hydrogen sulfide solution.As the result of the two tests the following facts have been made clear.(1) In the test made by charging annealed material with cathodic hydrogen, the crystals were deformed plastically, and the lattice of the crystals expanded. In the case of quenched and tempered material, and in the case also of the so-called“received”material, the behaviors of hydrogen detected by the X-ray line profiles are mostly static.(2) In the test made of annealed material in hydrogen sulfide solution, (immersed in the solution non-stressed or restricted by bending stress), there were little change in the X-ray line profiles though the test was continued until crackings by the stress corrosion began to be observed. This was also the case with the so-called“received”material.The following conclusion can be made from the two tests mentioned above: that the hydrogen in the test (1) behaves differently from that in the test (2), and so it is considered that hydrogen is not allowed to invade the lattice of the crystals through hydrogen sulfide solution.","PeriodicalId":341160,"journal":{"name":"Technology reports of the Yamaguchi University","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1972-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128462913","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