H70 粉末冶金综合 标准查询与下载

BS EN 24497:1993 金属粉末.用干筛法测定粒度

This International Standard specifies a method of determining the particle size distribution of metallic powders by dry sieving into size fractions. The method is applicable to dry, unlubricated metallic powders, but not applicable to powders in which the morphology differs markedly from being equiaxial, for example flake-type powders. The method is not applicable to metallic powders having a par-ticle size wholly or mostly under 45 μm.

Metallic powders - Determination of particle size by dry sieving

YS/T 56-1993 金属粉末-自然坡度角的测定

Metal powders - Determination of natural slope angle

ASTM B311-93(2002)e1 含低于2%孔隙率的粉末冶金材料密度测定的试验方法

For P/M materials containing less than two percent porosity, a density measurement may be used to determine if the part has been densified, either overall or in a critical region, to the degree required for the intended application. Density alone cannot be used for evaluating the degree of densification because chemical composition and heat treatment affect the pore-free density. For cemented carbides, a density measurement is normally used to determine if there is any significant deviation in composition of the carbide grade. For straight tungsten carbide-cobalt grades, the relationship is straightforward. For complex carbide grades (for example, grades containing tantalum carbide or titanium carbide, or both, in addition to tungsten carbide-cobalt), the situation is more complicated. If the measured density is beyond the specified limits, the composition is outside of the specified limits. A measured density within the specified limits does not ensure correct composition; compensation between two or more constituents could result in the expected density with the wrong composition. Density alone cannot be used for evaluating a cemented carbide grade.1.1 This test method covers the determination of density for powder metallurgy (P/M) materials containing less than two percent porosity and for cemented carbides. This test method is based on the water displacement method. Note 18212;A test specimen that gains mass when immersed in water indicates the specimen contains surface-connected porosity. Unsealed surface porosity will absorb water and cause density values higher than the true value. This test method is not applicable if this problem occurs.1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Test Method for Density Determination for Powder Metallurgy (P/M) Materials Containing Less Than Two Percent Porosity

prEN 24491-4-1992 金属粉末.用还原法测定氧含量.第4部分:用还原萃取法测定氧的总含量

Metallic powders; determination of oxygen content by reduction methods; part 4: total oxyen by reduction-extraction (ISO 4491-4:1989)

prEN 24492-1992 金属粉末(不包括硬质合金粉末)的压实与烧结尺寸变化的测定

Metallic powders, excluding powders for hardmetals; determination of dimensional changes associated with compacting and sintering (ISO 4492:1985)

prEN 23954-1992 粉末治金用粉末的取样

Powders for powder metallurgical purposes; sampling (ISO 3954:1977)

prEN 24491-2-1992 金属粉末.用还原法测定氧含量.第2部分:还原时氢的质量的损失(氢损失)

Metallic powders; determination of oxygen content by reduction methods; part 2: loss of mass on hydrogen reduction (hydrogen loss) (ISO 4491-2:1989)

NF E66-304:1992 排屑切削加工中硬质切削材料的应用.排屑的主要类别和应用类别的标识

Application of hard cutting materials for machining by chip removal. Designation of the main groups of chip removal and groups of application.

FZ/T 92015-1992 粉末冶金钢领

Powder metallurgy steel ring

ASTM B294-92(2006) 硬质合金硬度的测试方法

Rockwell hardness is one of the more important properties used to evaluate cemented carbides. For compositional groups of cemented carbides, hardness is an indication of wear resistance and toughness. Lower hardness grades usually indicate less wear resistance but greater toughness. For a specific grade of cemented carbide, hardness is an indication of the metallurgical quality of the material. In no case is hardness the only property to be considered in evaluating cemented carbides.1.1 This test method covers the hardness testing of cemented carbides by use of the Rockwell hardness tester with the Rockwell A scale (diamond indenter and 588.4 N (60 kgf) load) in the range of Rockwell A80 and above. Also covered are the procedures for the testing and selection of diamond indenters, the management and traceability of the four levels of standard test blocks, the acquisition of secondary standard test blocks, and the making and calibration of working standard test blocks.1.2 The Rockwell hardness tester is a convenient and reliable means of measuring the hardness of cemented carbides. A hardness value is obtained easily, but it is subject to considerable error unless certain precautions are observed.1.3 Test Methods E 18 shall be followed except where otherwise indicated in this test method.1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Hardness Testing of Cemented Carbides

ASTM B294-92(2001) 硬质合金硬度的测试方法

1.1 This test method covers the hardness testing of cemented carbides by use of the Rockwell hardness tester with the Rockwell A scale (diamond indenter and 588.4 N (60 kgf) load) in the range of Rockwell A80 and above. Also covered are the procedures for the testing and selection of diamond indenters, the management and traceability of the four levels of standard test blocks, the acquisition of secondary standard test blocks, and the making and calibration of working standard test blocks. 1.2 The Rockwell hardness tester is a convenient and reliable means of measuring the hardness of cemented carbides. A hardness value is obtained easily, but it is subject to considerable error unless certain precautions are observed. 1.3 Test Methods E18 shall be followed except where otherwise indicated in this test method. 1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Hardness Testing of Cemented Carbides

ASTM B294-92(1997) 硬质合金硬度的测试方法

1.1 This test method covers the hardness testing of cemented carbides by use of the Rockwell hardness tester with the Rockwell A scale (diamond indenter and 588.4 N (60 kgf) load) in the range of Rockwell A80 and above. Also covered are the procedures for the testing and selection of diamond indenters, the management and traceability of the four levels of standard test blocks, the acquisition of secondary standard test blocks, and the making and calibration of working standard test blocks. 1.2 The Rockwell hardness tester is a convenient and reliable means of measuring the hardness of cemented carbides. A hardness value is obtained easily, but it is subject to considerable error unless certain precautions are observed. 1.3 Test Methods E18 shall be followed except where otherwise indicated in this test method. 1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Hardness Testing of Cemented Carbides

ASTM B390-92(2006) 钨硬质合金表观晶粒尺寸及其分布的评定

The apparent size and distribution of tungsten carbide grains in cemented carbides affects the materialrsquo;wear resistance and fracture. For a given chemical composition, an increase in the average grain size will result in increased toughness and decreased wear resistance. This practice illustrates representative micro-structures for a wide range of tungsten carbide-cobalt grades. This is not intended to be used as a specification for carbide grades; producers and users may use the micrographs and the grain size chart as a guide in developing their own specifications.1.1 This practice for the visual comparison and classification of the apparent grain size and distribution of cemented tungsten carbides is limited to cemented tungsten carbides that contain approximately 6, 10, and 18 % cobalt.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Practice for Evaluating Apparent Grain Size and Distribution of Cemented Tungsten Carbides

ISO 10070:1991 金属粉末 在稳态流动条件下粉末层的透气性试验外层表面区域的测定

Specifies a method of measuring the air permeability and the porosity of a packed bed of metal powder, and of deriving therefrom the value of the envelope-specific surface area. Annexes A and B are for information only.

Metallic powder; determination of envelope-specific surface area from measurements of the permeability to air of a powder bed under steady-state flow conditions

ISO 10076:1991 金属粉末 根据在液体中重量沉降以及扩散测量以确定粒子尺寸分布

Specifies methods which are suitable only where Stokes' equation is applicable. They are suitable for all metallic powders containing particles in the size range 1 鎚 to 100 鎚. Does not apply to powders: containing particles whose shape is far from equiaxial; which are mixtures; containing lubricant or binder; which cannot be dispersed in a liquid.

Metallic powder; determination of particle size distribution by gravitational sedimentation in a liquid and attenuation measurement

HB 5441.5-1989 粉末冶金制品和粉末的性能测试 金属粉末振实密度的测试方法

本标准规定了金属粉末的振实密度的测试方法

Performance testing of powder metallurgy products and powders - Test method for tap density of metal powders

HB 5441.9-1989 粉末冶金制品和粉末的性能测试 烧结金属材料（硬质合金除外）表观硬度的测定

本标准适用于除硬质合金以外的烧结金属材料硬度的测定，包括未经热处理的材料和虽经热处理，但其硬度值至少从表面至5mm深处基本是均匀的材料。

Performance testing of powder metallurgy products and powders Determination of apparent hardness of sintered metal materials (except cemented carbide)

HB 5441.8-1989 粉末冶金制品和粉末的性能测试 烧结金属衬套径向压溃强度的测定

本标准规定了圆筒形粉末冶金衬套径向压繥慷鹊牟舛ǚ椒ā?

Performance testing of powder metallurgy products and powders - Determination of radial crush strength of sintered metal bushings

HB 5441.7-1989 粉末冶金制品和粉末的性能测试 渗透性烧结金属材料密度和开孔度的测试方法

本标准规定了渗透性烧结金属材料密度和开孔度的测试方法

Performance testing of powder metallurgy articles and powders Test methods for density and porosity of permeable sintered metal materials

HB 5441.6-1989 粉末冶金制品和粉末的性能测试 金属粉末流动性的测试方法

本标准规定了用标准漏斗测试金属粉末的流动性的方法。 　　本标准只适用于能自由流过规定漏斗孔的粉末。

Performance testing of powder metallurgy products and powders Test methods for fluidity of metal powders