QC/T 869-2022 English PDF (QCT869-2022)

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QC/T 869-2022: Short-cycle drawn arc welding stud
QC/T 869-2022
QC
AUTOMOBILE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.040
CCS T 31
Replacing QC/T 869-2011
Short-cycle drawn arc welding stud
短周期弧焊焊接螺栓
ISSUED ON: APRIL 08, 2022
IMPLEMENTED ON: OCTOBER 01, 2022
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 6
1 Scope ... 7
2 Normative references ... 7
3 Terms and definitions ... 8
4 Types and sizes ... 8
5 Product number ... 9
Foreword
This document was in accordance with the requirements of GB/T 1.1-2020 "Directives
for standardization - Part 1: Rules for the structure and drafting of standardizing
documents".
This document replaces QC/T 869-2011 "Short-cycle drawn arc welding stud".
Compared with QC/T 869-2011, except for editorial modifications, the main changes
are as follows:
- CHANGE the limit deviation of "l" in the dimension, from the original tolerance
to "js15" (see table 1);
- CHANGE the limit deviation value of dk; MAINTAIN maximum tolerance; the
deviation value is h14 (see Table 1);
- CHANGE product grade of "Tolerance" in the specification, from "B" to "A" (see
Table 2).
This document was proposed by AND shall be under the jurisdiction of the National
Automotive Standardization Technical Committee (SAC/TC 114).
Drafting organizations of this document: Shanghai Dongfeng Motor Special Parts Co.,
Ltd., China FAW Group Co., Ltd. Research and Development Institute, Shanghai
Automotive Passenger Vehicle Corporation.
The main drafters of this document: Xiong Yaping, Yang Chaoyang, Zhang Qiongmin.
This standard replaces the standard previously issued as follows:
- It was first published as QC/T 869-2011 in 2011;
- This is the first revision.
Short-cycle drawn arc welding stud
1 Scope
This document specifies the type, size, technical conditions of short-cycle drawn arc
welding stud.
This document is applicable to short-cycle drawn arc welding studs for automobiles,
which have thread specifications of M3 ~ M10 and mechanical performance grades of
4.8 and 8.8.
2 Normative references
The contents of the following documents constitute the essential provisions of this
document through normative references in the text. Among them, for dated references,
only the version corresponding to the date is applicable to this document; for undated
references, the latest version (including all amendments) is applicable to this document.
GB/T 2 Fasteners - Ends of parts with external thread
GB/T 90.1-2002 Fasteners - Acceptance inspection
GB/T 90.2-2002 Fasteners - Marking and packaging
GB/T 196 General purpose screw threads-Basic dimensions for diameter from 1 to
600mm
GB/T 197 Common thread - Tolerances
GB/T 3098.1-2010 Mechanical properties of fasteners - Bolts, screws and studs
GB/T 3103.1-2002 Essential oils and aromatic extracts - Determination of residual
benzene content
GB/T 5779.1-2000 Fasteners - Surface discontinuities - Bolts, screws and studs for
general requirements
GB/T 30512 Requirements for prohibited substances on automobiles
QC/T 326 Coding rules for automotive standardized parts
QC/T 625 Metallic coatings and conversion coatings for automobiles