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GB/T 16743-2010 English PDF

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GB/T 16743-2010: Blanking clearance
Status: Valid

GB/T 16743: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 16743-2010English189 Add to Cart 3 days [Need to translate] Blanking clearance Valid GB/T 16743-2010
GB/T 16743-1997English279 Add to Cart 3 days [Need to translate] Blanking clearance Obsolete GB/T 16743-1997

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Basic data

Standard ID GB/T 16743-2010 (GB/T16743-2010)
Description (Translated English) Blanking clearance
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J32
Classification of International Standard 25.020
Word Count Estimation 8,882
Date of Issue 2010-09-26
Date of Implementation 2011-02-01
Older Standard (superseded by this standard) GB/T 16743-1997
Regulation (derived from) National Standard Approval Announcement 2010 No.6 (Total No.161)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the value of the sheet metal blanking clearance sheet metal and nonmetal. And shear surface quality and dimensional accuracy levels using chest value here blanking pieces that can be achieved. This standard applies to a thickness of 10mm or less sheet metal and nonmetal ordinary punching.

GB/T 16743-2010: Blanking clearance

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Blanking clearance ICS 25.020 J32 National Standards of People's Republic of China Replacing GB/T 16743-1997 Blanking Clearance Issued on. 2010-09-26 2011-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 16743-1997 "blanking gap." This standard compared with GB/T 16743-1997, the main changes are as follows. --- Punched categories were further subdivided to relax the blanking interval selection value; --- Specifies the range used in the production of blanking clearance; --- Increasing the selection principle of blanking clearance when EDM mold edge; --- Information about double clad sheet metal punching gap material selection principles; --- Remove the hot-rolled silicon steel grades have been eliminated; --- Increased references; --- On the part of the text made editorial changes. This standard by the National Standardization Technical Committee Forging (SAC/TC74) and focal points. This standard was drafted. Xi'an Jiaotong University. The main drafters of this standard. Guo, Wu Huaying, Stone only. This standard replaces the standards previously issued as follows. --- GB/T 16743-1997. Blanking Clearance

1 Scope

This standard specifies the blanking clearance value of sheet metal and nonmetal board materials, as well as when using the gap value can reach the size of the blanking member Precision and cut surface quality. This standard applies to a thickness of 10mm or less metal and nonmetal materials conventional blanking plate. 2 Definitions, symbols Definition and standard symbols used blanking interval as shown in Table 1 and Table 2 Table 1 defines definition The distance blanking mold die and the punch blade between the side walls. 1- sheet; 2- punch; die 3- Blanking Die schematic Table 2 Symbol symbol Symbol Name Unit Legend Legend c blanking clearance (unilateral gap) to material thickness percentage /% t t sheet thickness mm τ material shear strength MPa R droop height of the thickness of the material expressed as a percentage /% t B bright band height to thickness of the material expressed as a percentage /% t F fault height thickness of the material expressed as a percentage /% t Fracture angle α (°) h burr height mm f Flatness mm

3 blanking clearance

3.1 Sheet Metal Blanking Clearance 3.1.1 Classification blanking clearance The main factor in the dimension accuracy by punching shear surface quality, tool life and force and energy consumption, the sheet metal punching into the gap in Table 3 Shown in five categories, namely. ⅰ class (small gap), ⅱ class (small gap), ⅲ class (middle gap), ⅳ class (large gap) and ⅴ class (large gap).

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Question 5: Should I purchase the latest version GB/T 16743-2010?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 16743-2010 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.