GB/T 35078-2018 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 35078-2018 | English | 130 |
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High speed precision hot upsetting forgings -- General specification
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GB/T 35078-2018: High speed precision hot upsetting forgings -- General specification---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT35078-2018
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.85
J 32
High Speed Precision Hot Upsetting Forgings -
General Specification
Issued on: MAY 14, 2018
Implemented on: DECEMBER 01, 2018
Issued by. State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 5
4 Technical Requirements ... 5
5 Test Methods and Inspection Rules ... 8
6 Mark, Package, Transportation and Storage ... 9
High Speed Precision Hot Upsetting Forgings -
General Specification
1 Scope
This Standard specifies the technical requirements, test methods and inspection rules,
mark, package, transportation and storage of high-speed precision hot upsetting
forgings (hereinafter referred to as “forgings”).
This Standard is applicable to using the high-speed precision hot upsetting forging
equipment to produce the steel precision hot forgings with mass 7.5kg below and outer
size no greater than 180mm at the beat of more than 50 times per minute.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB/T 191 Packaging - Pictorial Marking for Handling of Goods
GB/T 224 Determination of Depth of Decarburization of Steels
GB/T 226 Test Method for Macrostructure and Defect of Steel by Etching
GB/T 228.1 Metallic Materials - Tensile Testing – Part 1. Method of Test at Room
Temperature
GB/T 229 Metallic Materials - Charpy Pendulum Impact Test Method
GB/T 230.1 Metallic materials - Rockwell Hardness Test - Part 1. Test Method
(Scales A, B, C, D, E, F, G, H, K, N, T)
GB/T 231.1 Metallic Materials - Brinell Hardness Test - Part 1. Test Method
GB/T 699 Quality Carbon Structural Steels
GB/T 700 Carbon Structural Steels
GB/T 702 Hot-Rolled Steel Bars - Dimensions, Shape, Weight and Tolerances
GB/T 3077 Alloy Structure Steels
GB/T 5216 Technical Requirements for Structural Steel with Specified
Hardenability Bands
GB/T 6394 Metal - Methods for Estimating the Average Grain Size
GB/T 8541 Terminology of Forging and Stamping
GB/T 13298 Inspection Methods of Microstructure for Metals
GB/T 13299 Steel - Determination of Microstructure
GB 13318-2003 General Rules for Safety and Environmental Conservation of
Forging Production
GB/T 13320 Metallographic Grading Atlas and Assessing Method for Steel Die
Forgings
GB/T 18254 High-Carbon Chromium Bearing Steel
GB/T 19096-2003 Technical Drawing - Drawing Presentation - Vocabulary and
Indications for Edges of Undefined Shape
3 Terms and Definitions
The terms and definitions stipulated in GB/T 8541 are applicable to this document.
4 Technical Requirements
4.1 Acceptance basis
The forging drawings, technical agreements and supply contract signed by the supplier
and the purchaser shall be served as the main basis for the inspection and delivery of
the forged finished products.
4.2 Raw materials
4.2.1 The raw materials selected for forgings shall conform to the provisions of GB/T
699, GB/T 700, GB/T 3077, GB/T 18254, GB/T 702, GB/T 5216, and other standards.
4.2.2 The steel used for forgings in addition to meeting the requirements of 4.2.1,
different forgings manufacturers shall also take enterprise standard or special technical
6 Mark, Package, Transportation and Storage
6.1 Mark requirements
6.1.1 The forgings shall be marked; when marking is not required, it shall be
determined through the negotiation between the supplier and the purchaser.
6.1.2 Each batch of forgings shall be accompanied by a quality certificate issued by
the Quality Inspection Department.
6.1.3 The symbol of storage and transportation of the package shall conform to the
provisions of GB/T 191; it shall mark the following contents.
a) Supplier name, address, contact number and fax;
b) The name, drawing number, quantity, status and part number of the packaged
products;
c) The purchaser organization and address;
d) Production batch number;
e) Date of packaging, and rust-proof period.
6.2 Package requirements
The forgings shall take the rust-proofed measures before being packaged; the rust-
proof period shall be determined through the negotiation between the supplier and the
purchaser. The packaging box shall adopt wooden box, calcium plastic corrugated box,
metal packing box, or reusable turnover box, etc.; if agreed by the purchaser, the
simple package can also be adopted. Appropriated measures shall be taken during the
packaging to prevent bumps during the transportation.
6.3 Transportation requirements
The forgings shall be avoided rain and bumps during the exit-factory transportation;
ensure no damage during the normal transportation.
6.4 Storage requirements
The packaged forgings shall be stored neatly in a ventilated and dry warehouse
according to their types and models.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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