ISO 683-17-2014 pdf free.Heat-treated steels, alloy steels and free-cutting steels 一 Part 17: Ball and roller bearing steels.
1.1 This part of Iso 683 specifies the technical delivery requirements for five groups of wrought hail
and roller bearing steels as listed in Table 3. namely
— through-hardening bearing steels (steels with about 1 % C and 1 % to 2 % Cr),
— case-hardening hearing steels,
— induction-hardening bearing steels (unalloyed and alloyed),
— stainless bearing steels, and
— high-temperature bearing steels.
1.2 This part of ISO 683 applies to the products and heat-treatment conditions given in Tablc 1 and the surface conditions given in Table 2.
1.3 In addition to this part of ISO 683, the general technical delivery requirements of ISO 404 are applicable.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 377, Steel and steel products — Location and preparation of samples and test pieces for mechanical testing
ISO 404, Steel and steel products — General technical delivery requirements
ISO 642, Steel — Hardenability test by end quenching (jominy test)
ISO 643, Steels — Micrographic determination of the apparent grain size
ISO 3763, Wrought steels — Macroscopic methods for assessing the content of non-metallic inclusions
ISO 3887, Steels — Determination of depth of decarburization
ISO 4948-1, Steels — Classification — Part 1: Classification of steels into unalloyed and alloy steels based on chemical composition
ISO 4948-2, Steels — Classification — Part 2: Classification of unalloyed and alloy steels according to main quality classes and main property or application characteristics
ISO/TS 4949, Steel names based on letter symbols
3 Terms and definitions
For the purposes of this document, the terms and definitions given in Iso 6929 and the following apply.
3.1
ball and roller bearing steels
steels for rings and/or rolling bodies which use balls and rollers to maintain the separation between the moving parts of the bearing
4 Classification and designation
4.1 Classification
The classification of the relevant steel grades is allocated in accordance with ISO 4948-1 and ISO 4948-2. All steel grades covered by this part of ISO 683 are special steels.
4.2 Designation
For the steel grades covered by this part of 150 683, the steel names given in the relevant tables are allocated in accordance with ISO/TS 4949.
5 Information to be supplied by the purchaser
5.1 Mandatory information
The manufacturer shall obtain the following information from the purchaser at the time of enquiry and order:
a) the quantity to be delivered;
b) the designation of the products form (billets, bars, rod, wire, tubes, rings, discs, etc.);
c) either the reference to the dimensional standard and the dimensions and tolerances selected from it (see Z) or the designation of any other document covering the dimensions and tolerances required for the product;
d) a reference to this part of ISO 683, i.e ISO 683-17.ISO 683-17 pdf free download.
Tags: alloy steels and free-cutting steels, Heat-treated steels
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ISO 18436-1-2012 pdf free.Condition monitoring and diagnostics of machines – Requirements for qualification and assessment of personnel一 Part 1: Requirements for assessment bodies and the assessment process. 5 Requirements for assessment body personnel 5.1 General provisions In order to ensure that the assessment process is carried out effectively and uniformly, the competence requirements for personnel involved in the entire process shall be defined by the assessment body and, in the case of a third party, be approved by the responsible TCC (in accordance with ISO/IEC 17024). The assessment body shall require its personnel (internal or external) to sign a contract, or other document, by which they commit themselves to comply with the rules defined by the assessment body, including those relating to confidentiality and those relating to independence from commercial and other interests, and from any prior or present link with the persons to be examined that would, in the opinion of the interested parties, compromise impartiality. Clearly documented instructions shall be available to the personnel, describing their duties and responsibilities. These instructions shall be maintained up to date. All personnel involved in any aspect of assessment activities shall possess appropriate educational qualifications, experience and technical expertise, which satisfy defined…