BS 5710-1979
|
ID： |
75EA140CC47145649DF388DC7888C500 |
|
文件大小(MB)： |
0.61 |
|
页数： |
10 |
|
文件格式： |
|
|
日期： |
2024-6-23 |
|
购买： |
文本摘录（文本识别可能有误，但文件阅览显示及打印正常，pdf文件可进行文字搜索定位）：
This Standard is obsolescent.,See the BSI Catalogue for details.,August 1998,BS 5710:1979,ISO 3763-1976,UDC 669.14-131 : 620,184 : 620.192.45,一s,aooJ-Adoo p ①,=0,と U 8 u つ,ベ〇〇,N,〇,OO+1W0M6,CXZI,〇 Z,〇 d,①,ゆ エエ,O5U,二,①,s n,g,つ,<,一 A d o 。p,①,su,①,コ,Methods for,Macroscopic assessment of the content of,non-metallic inclusions in wrought steels,[ISO title: Wrought steels - Macroscopic methods for assessing,the content of non-metallic inclusions],Methodes pour la determination macroscopique de la teneur en inclusions,non metalliques des aciers corroyes,Verfahren fur die makroskopische Bestimmung des Gehalts von nichtmetallischen,Einschlussen in Schmiedestahl,BS 5710 : 1979,Contents,Page,Foreword Inside front cover,Cooperating organizations Back cover,Methods,一s,cn◎,二,doQ p,",=0,と,uoour,ベ〇〇,(N,〇。〇。+ln0,(Nr,6 a 7 〇 z,da ー」エ,cvfu 二①,3,8つ,4,ー A d o o,p,①,S U 8 コ,1. Scope and field of application I,2. General 1,3. Blue fracture test method 1,4. Step machined test method 2,5. Magnetic particle inspection method 3,National foreword,This British Standard, which has been prepared under the,direction of the Iron and Steel Standards Committee, is,identical with ISO 3763 'Wrought steels — Macroscopic,methods for assessing the content of non-metallic inclusions/,published by the International Organization for,Standardization (ISO).,Terminology and conventions The text of the international,standard has been approved as suitable for publication,without deviation, as a British Standard. Some terminology,and certain conventions are not identical with those used in,British Standards; attention is especially drawn to the,following.,Page,Annexes,A. Standard diagrams for the blue fracture test,method 5,B. Procedure for magnetic particle inspection 6,Tables,1. Inclusion distribution based on length 2,2. Inclusion distribution based on thickness 2,3. Dimensions of steps on test piece 2,4. Inclusion distribution based on length 3,The comma has been used throughout as a decimal marker.,In British Standards it is current practice to use a full point,on the baseline as the decimal marker.,Wherever the words 'International Standard' appear,referring to this standard, they should be interpreted as,'British Standard'.,NOTE. Textual errors. In 3.1, line 1, for ^detemining* read,'determining'.,In the footnote to B.1, for '1 mm2 = 1 cSt (centistokes)f read,'1 mm2/s = 1 cSt (centistokes),.,BS 5710 : 1979,British Standard Methods for,Macroscopic assessment of the content of,non-metallic inclusions in wrought steels,ー密,◎,sdoo p,①,=0,と u o o u n z o o e,〇。〇。+HWOe,eo- 6,CXZI,〇 Z O,d,①,S,匸,LL,CQU =,①,3,CD,つチ A d o 。p,①,S U 8 コ,1 SCOPE AND FIELD OF APPLICATION,1.1 This International Standard describes the macroscopic,methods used in current practice for assessing the content,of non-metallic inclusions in wrought steel products.,1.2 Macroscopic methods are those dealing with nonmetallic,inclusions visible to the naked eye or with the,aid of a magnifying glass with a magnification of not more,than X 10. Only inclusions equal to or greater than 1 mm,long are taken into consideration.,1.3 The methods usually applied and defined in this,International Standard are :,— the blue fracture test method;,— the step machined test method;,— the magnetic particle inspection method.,2 GENERAL,2.1 Characteristics of non-metallic inclusions,Non-metallic inclusions, shown by the macroscopic,methods given in clauses 3, 4 and 5, appear as stringers.,The parameters characterizing non-metallic inclusions shall,be their total number and their length or thickness. No,distinction is made concerning the type of inclusion.,2.2 Sampling,It should be noted that the shape of the inclusion as well as,the number of inclusions and their distribution depend on,the grade of steel, the method of production, the,conditions of killing, the shape of the ingot and the,rolling reduction. These various factors should be taken,into consideration when selecting the sample.,For these reasons it is not possible to formulate a universal,method of sampling and accordingly general rules are given,in the case of each method.,3 BLUE FRACTURE TEST METHOD,3.1 Principle,rhe blue fracture test method consists in detemining the,total number and distribution of non-metallic inclusions,visible on the surface of a fracture which has undergone,blue tempering. This fracture is in the longitudinal direction,of the product and the inclusions normally appear as white,stringers.,3.2 Field of application,The blue fracture test method is applicable to forged or,rolled products and can be used for a wide range of,products. In general, the test is carried out on semi-finished,products.,3……
……