This standard specifies the performance of self-drilling screws that meet GB/T 528. The drill bit can drill a threaded prefabricated hole during installation and has been heat-treated. When this screw extrudes the thread that matches it, it uses the drill bit of the screw and the threaded part connected to it to drill the hole first and then extrude the thread. GB/T 3098.11-2002 Mechanical properties of fasteners Self-drilling and self-drilling screws GB/T3098.11-2002 standard download decompression password: www.bzxz.net

jcs 21,c60.10
National Standard of the People's Republic of China
Self-drilling and self-tapping screws
Drilling srrews with tapping screw thread2002-12-05 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
2003-06-01 Implementation
GH 3098.11—2002
This standard is equivalent to standard 1501U666:1999 Self-drilling and self-tapping screws for machines and equipment. [3 yuan / T208 general title is "firmware mechanical performance", including the following parts: combustion inspection meal nailing short column,
----(R/T ROA.1--2DC0
weekly performance
--G17T 3098.22C00
---.GH.E 308. X-2CC
-ER/T9R4-200F
Love Xu Li Annotation
Mechanical properties of fasteners
--.-.GR/T 3333. 5-: 200C
Chinese locomotive
--G/T 3338.62000
.- GH/T 3308. 7—2000
--G5/T3093.8—199%
--C3T3008.3.202
.--.GB1 3093.10--1095
...-3T 2US. 11. - 8002
Required mechanical hall
Purple hardware core
Mechanical hall
Deep machine
Plastic tongue twisted tooth pattern:
Fixed screw:
Quick nut fine thread burning pattern;
Self-gluing screw
Stainless steel screw, screw and probe!
Self-gluing screw calcium,
Heat-frequency connection:
Effective through the hexagonal must be banned:
Non-ferrous metal road inspection, over the column and the mother: Comfort hardware mechanical hall
..--GB/T 5098.2-1006
—GR/T 3098.13--1996
G3'T 3068. 14 ~2000
--GB/ 509S, 75--2(HX
-GR/T 3088. =5 -2000
GB/ 3068. J7—2000
Confidentiality of fasteners
Mechanical properties of fasteners
Mechanical properties of fasteners
Mechanical properties of fasteners: Preload gauge test parallel support single method. Standard and GB/308.11-9 2. The following are the main changes: 1. Added and adjusted some contents (Chapter 1) 3.13 material chemical composition and material grade; 3.2.1 surface quality and maintenance standards (3.2.2% and 3.5% respectively); 4. Cancelled the various specifications of the end effect specification [Table 1-Table 4] 3.5\aperture an\limit size, adjustment? "f diameter max\size table 3"; 5. Adjustment of the implementation\destruction year "index (roll 4) This standard replaces GB/Jiangsu 398.11-3 from the 1st of the implementation period. This standard is also proposed by the China Federation of Machinery Industry. The National Polymerization Parts Technology Committee is responsible for the drafting of this standard, and the China Academy of Engineering is responsible for the drafting of this standard, and Ningbo Zhongjing Special Tightening Parts Co., Ltd. This standard replaces the previous general version of the standard: R/T3098.11-1995.
1 standard
National Standard of the People's Republic of China
Mechanical properties of fasteners
Self-drilling screws
Mechanical properties of fasteners
Self-drilling screws
Mechanical properties of fasteners
Self-drilling screws
threadGB/3098.11—2002
s011So10666;1999
代萨：30x.115
十标准规定广约(B/一528的自打火经、其修复头部分在安装过中舱钉出频纹顾礼制制制、后热治疗用户双频的功能、本类东护片出式结点时，是以功干干钉于钻钉的部分与与逐爆效部分，首甲引后持玉爆纹
The purpose of this standard is to ensure that the most important thing is to ensure that the prefabricated hole is squeezed and exhausted during the process, without deformation and interruption, and without causing any damage. Therefore, the following is the recommended performance The most important standard for evaluating the performance of self-drilling and self-priming floating screws is: Surface strength:
… The ability of the prefabricated system to cooperate with the pressure and strength: torsion strength.
2 Reference standards
The following standards contain the provisions that are used in the standard and constitute the text of this standard. When this standard is published, the version indicated shall be valid, and all standards will be revised: The parties who propose to use this standard shall explore the sufficiency of the latest version of the following standards. G/T 3198.17-20M Mechanical properties of tight fittings Preload test Parallel point rate surface method Gi1s5330.19ss
T43 0. Full test Part 1: Test 57CT5.1-202 Fasteners Electrical layer (15041431999 positive G1/piece 230-2002 daily explosion monthly cost efficiency: 1S07178.199%) 3 Lami requirements
3.1 Materials
Self-drilling and self-tapping screws should be made of chemical carbon steel or treated steel. 3.2 Metallographic properties
3.2.1 Surface hardness
The surface hardness of the self-drilling and self-tapping screws after heat treatment should be 530H0,. 3.2.2 Degree of quality
The core hardness after heat treatment:
-520HV5-400H V month frequency specification. 2
32V4000 application specification
Recommended minimum fire temperature is 33
National Quality Inspection Bureau of the People's Republic of China 2602·12-05 approved 203-C6-01 box
GB/T3098.11-2002
Virtual exemption 75~31. For the fire degree range, in order to reduce the risk of brittle fracture of the pressure body to the minimum level, 3.2.3 The depth of the carbon layer
The depth of the permeable layer must meet the value given in the previous 1. Table: Product depth
Effective code
ST. ST3.2.4 In the microstructure of the drilled part after treatment, there should be no band-like defects between the surface geological layer and the inner part. There is a danger of the drill bit being broken due to the drilling screw. Therefore, the manufacturing should be replaced and (or >self-deficiency measures: some of which include testing and inspection according to G3/亃353R.12 to prevent the occurrence of danger, and GB/T5267.1 also contains relevant requirements or requirements for the elimination of hydrogen brain plating fasteners, which should be considered. 3.3 Machine excavation performance
3.3.1 Station crazy work ability
The cutting part of the helper should be able to produce the required internal pattern and system for quick pressure and climbing nail cooperation under the test conditions specified in 1.2.1. 3 .3.2 Plastic properties
In the hole made according to 3.3.1, the self-drilling screw shall be able to squeeze out the internal thread that matches it: when the test is carried out according to 4.7..1, the screw shall not be deformed. 3.3.3 Torsion strength
When the test method specified in 4.2.3 is used to test the white needle white government screw, its torque tolerance shall be guaranteed to be equal to the value of the breaking moment specified in the table.
4 Test methods
4 1 Metallurgical performance test
4.1.1 Hardness test
Hardness test GBT4340.1, the indentation should be made on the flat part as much as possible, preferably on the head part. 4.1.2 Core hardness test
The core hardness test shall be carried out according to GH/T434).1, and the measurement shall be carried out on a microscope or a workpiece. 4.1.3 Determination of residual depth
The depth of the surface paint layer should not be microscopically measured on the surface, but should be taken into account in the middle part of the tooth bottom, or ST4.2. The test shall be carried out at the bottom of the thread. It shall be carried out on the probing wheel of the test piece with a micro-impact test force of 310R. The net embedding depth shall be calculated from the point where the actual hardness of the core is 30HV. 4.1.4 Micro-weaving test The micro-weaving test shall be carried out in accordance with the corresponding metallographic inspection standards. 2.2 Machine filter performance test 2.2.1 Station and attack test 4 2.1 Test equipment Figure 1 Example of test equipment. GB/I3098.112002 The test plate shall be made of 0.23% low-sensitivity steel with a hardness of 110V39~11V30 (G/4.4).1. The thickness of the test plate shall comply with the requirements of Table 2. [11
Drilling and tapping test equipment
Drilling and tapping test pliers
Test board thickness\! ProductbzxZ.net
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1 acceptance test can be composed of two parts, and the selection of the appropriate part is suitable for monitoring the inspection 42.1.2 inspection procedure
people at the same time: 9
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The mold needle specimen with or without forging layer (connection requirements) is inserted into the test plate until one of the buckles is completely penetrated by the test plate. 2. The minimum axis spacing and screw speed are determined by the drilling and modification process. 4.2.2 Hole test
After double and cooperative design, it can be tested without optical marketing. For this purpose, the test plate used should meet the requirements of 4.2.1., and its thickness should meet the requirements of 3. The part of the test plate with holes should be punched first to locate the points. After drilling through the entire plate, the size of the hole should not exceed the limit specified in 3. The test disaster in Figure ? is a supplement to the test setting in Figure: The inner diameter of the sleeve should be about 1.21mm larger than the major diameter of the thread. The length of the sleeve should be selected according to the requirements of the technical specifications of the sleeve
and the installation of self-drilling self-placement screws should be guided by ten. If these values ​​are exceeded, the drill bit part may be damaged due to new cracks or overburning.
Thread specification analysis
4.2.3 Torque test
GD/T 3098.11—2002
1 Set of two: one test bottle 3 one
Figure 2 Test fixtures
Table 3 Hole test data
The test plate should be clamped in a screw mold or other device that matches the bad order pattern; the tightening part of the screw should not be damaged
Figure 3 is a test device. After the test is completed, at least two buckles are left in the room, except for the printed The drilled part is clamped in the mold. Under the condition of the nail package specifications, the bottom clamp is fixed. The head of the screw is not subjected to variable force. The torque-measuring device is used. The screw should be twisted until it breaks. The screw should meet the specified damage specifications in the table. The torque wrench is used for torque test. The measurement error should be within 3% of the specified torque value. A device that can display the torque accuracy can also be used. A small wrench should be used during the extension test.
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