Verification Regulation of Metallic Rockwell Hardness Reference Blocks (ScalesA B C D E F G H K N T)
Some standard content:
National Metrology Verification Regulations of the People's Republic of China JJG 113-2003
Standard Metal Rockwell Hardness Refererce Blocks
(Scales A, B, G, D, E, F, G, H. K, N,T) Metallic Rockvell Hardness Refererce Blocks(Scales A, B, C, D, E, F, G, HK N, T) 2003-09-23 Issued
2004-03-23 Implementation
Issued by the General Administration of Quality Supervision, Inspection and Quarantine JIG IJ3-203
Standard Metal Rockwell Hardness Blocks
A, B, CD .FG
H，K，N，T Scales) Verification Regulations
Yeriticatlon Kegulatlon or
Metallic Rockwell Hardness Test Blocks (Scales A, B, C, D, E,, G, H, K, N, T) JJG 113-—2003
JJG113—1991
JJG 149—1991
JJG334—1993
(Part of the content)
This regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on September 23, 2003, and came into effect on March 23, 2004
Responsible unit:
Main drafting unit:
Participating drafting units:
National Force and Hardness Metrology Technical Committee China Institute of Metrology
South China Metrology and Measurement Institute
Shandong Province Laizhou Testing Machine Factory
This regulation is entrusted to the National Technical Committee for Force and Hardness Metrology to interpret this regulation. The main drafter:
Cheng Xinxuan
Additional drafters:
Yang Fengming
Liu Quanhong
JJG113—2003
(China Institute of Metrology)
(China Institute of Metrology)
[Henan Institute of Metrology and Testing]| |tt||(Laizhou Testing Machine Factory, Shandong Province)
[Henan Price Measurement and Testing Institute]
1 Specification
2 References
3 Description
4 Metrological performance requirements,
4.1 Hardness range and uniformity of standard blocks
4.2 Stability of standard blocks...
5 General technical requirements...
5.1 Geometric shape of standard blocks
5.2 Other requirements for standard blocks|| G.3 Processing of verification results.Www.bzxZ.net
Verification period
JJG113—2003
Appendix A Verification format of standard metal rock hardness block
Appendix E Verification certificate and verification result notice page format of standard metal rock hardness block (1)
1 JIG: 113—2003
Verification procedure for standard metal Rockwell hardness blocks (A: H, C, I), F: F, H, K, T scales)
This procedure describes the verification, subsequent verification and use inspection of standard metal Rockwell hardness blocks (A, C, I, F, H, K, T scales).
This procedure mainly introduces the following documents:
ISo 650s - 1 Melallc malerials - Rockrel harcness cgt - part 1:Test nniknd (scalcy +, B, t, I, E, FG, H, K,, T)
GB/T230.2—2002 Test Method for Rockwell Hardness Test Part 2 Part: Hardness card (A, B, J, F, G, H, K, T scale) inspection standard
GB/I230.3-20024 Alloy road several silicon test Part 3: Standard hardness head (A, B, (, 12, J, F, G, H, K, T scale! The standard smile
This specification should be used in accordance with the effective version of the selected sub-item: 3 Overview
Marking gold two-way hardness reading (hereinafter referred to as the standard fast; it is a small direct light test instrument for gold bottom hardness measurement, road reference standard and card calculation public I see 1 decay 1 Rockwell monument standard people
Jade system
Gold has examples
￥$1.5x75n.n
Gold stone group
Gold Nanshi medical theory
Ball 43.175mum ||t t||Ball 1.5875mm
Ball = 1.5875mm
New test
Main test force, total test square
Calculation formula of the Ministry of Economy and Trade
Indenter type
Ball p3.175nm
King Kong right cone
Jinzhen Shizhoupu
Jinpan stone round pin
Ball.3875m
Ball 1.5875
Ball.5875mr
3JG 113—2083
Table 1 (velvet)
, engraved test force
upper test
total test is
Note: After the main test, the residual depth of the giant surface is the source of the research (mm)
Metrological performance requirements
Hardness range and uniformity of standard blocks
Hardness value calculation formula
The hardness range and uniformity requirements of standard blocks are shown in Table 2. The uniformity of the standard block refers to the difference between the hardness values of each point measured at different positions of the workpiece of the standard block using a standard Rockwell hardness machine under the condition of unchanged verification conditions.
In Table 2, H represents the 5-point average hardness of the standard block Mean value, HR is the Rockwell hardness unit symbol, and the hardness scale is marked after HR. For example: 30.1HRC means that the Rockwell hardness value of the C scale is 30.1g4.2 Stability of standard blocks
4.2.1 The stability of standard blocks is expressed by the absolute value of the difference between the average hardness values obtained by two calibrations before and after. The stability requirements of commonly used standard blocks within one year are shown in Table 2. 4.22 In order to ensure the stability of the standard block metallurgy, deep cryogenic treatment and natural aging for more than half a year are required when producing steel hardness blocks.
Cap 2 Hardness range, mean and elasticity of standard blocks
Accuracy range
(20 ~40) HRA
(45 ~75)IIRA
(HO.-88)HI
(2050)IIRE
(60 ~ 60) JIRD
(&5 - 100) HRB\
The stability is not greater than*
.05 (IH) or
0,03 [130 - )
Stability is not better than
Standard block single pain range
(20~30) HRC
(35 .- 55) HRC
(0 -- 70) HRG
(40-47)HR1)
(55 -63)HRT)
(70 .. 77)HRD
(70 -77)HRH
(84 ~90) HRF
(93 .- 1U) HRE
(r0 ~ 75) HRF
(80--90)HRF
(94-1UO)HRF
(30 - S0) HRC.||tt| |(55~75) HRC
(80 - 94) HRG
(B0~94)IRH
(96 -M) I
(40 -60) HRK
(65 -$D)HRE
(85 - 100) HHK
(70 -.77) HR15)
(7B-88)HR15N
(89-91)IIR15N
(42-54)HR30N
(55 -73) HK30N|| tt||(74 -80) HR30N
(20 -31) HR15A
{32 -61) HR45N*
(63 -- 70) HR45N
( 73 -- 80) HRIST
(E1 - 87) HR1ST
(8R~ 93) HR15T-
(43 .- 56) HR30T
(57 ~69 ) HH3UF
(70~82)HR30T
JJG113-2003
Table 2 (ammonium)
Qiaohui is not very dry
DS (ION-H )
0.015 (100 -H)
0.03 (130 - H)
0.03 (130 - H)
0.03 (130 - H)
0.03 (130
.02 (10-) or 0.6HR
0.03 (10n-H) or 1.2HR
Qualitative analysis of
Green·!|| tt||Ge Tui Tou Di Dao Xia
(12 . 33) HR45-
24 ItH4S
(35 -- 72+ H45'\
JJG: 113-·-2103
Table 2 Twist"
Degree This book*
: for or state point protection to bring book standard law
two real joint university: H and point very focus on the public: 5 general technical requirements
standard The size, flatness, parallelism and surface requirements of the standard block are shown in Table 3. Table 3 Standard block geometry
length × or
diameter
smaller than /am
outside drawing 60
disordered not reaching ||tt| | thickness is not small, m
surface material R
work is the bearing surface is not
large! Note: measurement requires full speed to discuss single sample Changyuan Da0.Bm5.2 you are looking for other numbers
1 ×45*
According to the principle of the principle, everyone
4 and the
supporting surface
is larger than
supporting plane
5.2.1 The standard does not require any special requirements, and the work and materials must not be rusty, cracked, damaged, burred, or have any other defects.
5.2. 2. The manufacturer's mark, sales number, noise and pollution mark of the standard block should be on the side of the mark; the standard block should be accompanied by the reverse mark and the required range of marks. 5.2.3 The use of currency blocks: the center allows the production room to calibrate 6 measuring instruments control || tt || including: door calibration, performance inspection and use inspection: 6.1 Verification conditions || tt||6.1.1 Environmental conditions
JJ 113-2003
611.】 Make the love sense in (23±5] and the humidity should not exceed 70% Conduct magnetic: heart.12 The surrounding environment should be clear of vibration, no 1.2 Standard hard wheat mill (hereinafter referred to as the mill) 1.2.1 Technical requirements for the use of standard gas core. The standard mill shall be equipped with a reading and h, the standard should be installed on the back. Adjust the workbench to 1:: standard push the head back to remove the fixed piano and install it in the hole, d, standard Kai "shooting, The unloading test is carried out by the lowering machine and the short cool and pleasant phase, the bottom test paint and carbon are all normal and flexible. The power lift has a stable movement sound, a low and distinguishable speed, no knocking, no noise, and all electrical equipment changes can be recorded, and the system is in good condition. The book refers to the test force maintenance time, test force time: total test force maintenance time years of operation age cycle time cell maximum continuous charging error tea (.6.2.2 small card test will be before and after the protection After the test, the initial test report is allowed to drop to ±U.2 for the (AK) standard response: For 10 N, the T scale should be (,5:61.2.3 The maximum allowable error of the total test force: for the 10 (AK) scale is ±0; for the 2 N, the 3 scale is 10.25 cups || tt || 62 The shape of the rear head of the standard method meets the requirements of Table 4. The length of the standard or the pressure head geometry is collected
standard group gold consumption right return lithium positive head
same laying angle
Hua Shao Yu
4 and up
Each effective surface
120° ± 0. 17*
120\+n.10°
per radius mm
measure at least
4 Huishan
old sweet noodles| |tt||0.2 ± 0.007
Door.2±.IK0S
Strict head two axis
and maintenance axis
actual display but separate
flash Inclination-degree not
Cai (HR)
Standard ball indenter (ball minus hardness indenter)
Diameter/ur
(at least Xie 3|| tt||Number of faces?
1.5875 ±
N, the hard spot is not less than
Zhao rise: 750
The stool quality will be
: 150m||tt| |6.1.2.5 The small position test of the standard diamond cone indenter is carried out on four standard blocks: the standard block L must be S, the indenter must be selected separately (, scale or person, according to Table 6: Standard for the year 1: The average thickness value obtained by pressing the standard head with 3 positive marks is not much different from the 5 positive marks obtained by using the standard pressure head. The bottom trend is out = 4H: check your accuracy on the mark! The mark of the first pressure head is adjacent to the mark of the base port giant. The small distance between the pressure head and the base port giant is shown in 6.2.2.8. The mark of the pressure head is not required for 5 years. The mark of 6.12 should be measured by the main device. The maximum human error is 0.0004mh6.1.2.8 The standard machine specimen pulling and the guide frame deformation and other readings should not exceed (.3HR (can be correct value): N moving The ruler should not be used. 6HR (pen has. 5
Secretion category
JIG113—2003
Verification standard Financial stone solid cone indenter shows the standard fast hardness range used with caution Hardness range| |tt||2-25)[IRC
(52-58) HRC
(40..46) HR45N
[88-94 IR
Table 6 Verification Standard Diamond Cone Indenter Standard Block Hardness Range Standard
Lomin Indenter IR
Lomin Le Indenter V Standard||tt| |The standard block used to calibrate the indication of the calibration machine has a uniformity as shown in the table. 6.1.2.93
Degree range
(20-26)HRC
(4.- 50)HC
(60-65)HH:
(80~85) IRA
(63 .- 70) HH45N
(42 ~54) HRN| |tt||(74 .- 80) HH30N
(88 ~94) HRJ5N
6.1.2.10. Annual stability, maximum allowable error and repeatability of the standard machine (When verifying the indication of the standard machine: the difference between the maximum and minimum values in the 5-point measurement is shown in Table 6.1. 2.31
Standard thrusters should be subject to annual stability assessment and regular calibration, with the calibration cycle generally being 5 years.
indicates the annual stability, maximum allowable error of indication and weight of standard thrusters. Gastric and standard fast uniform rat carbon range
(80~88)IIRA
(8S.. 1U0) HRH
(2 -30)
( 35 - 55) HR:
(60~70) HRC
(89~91)
HIR15N
[12 -- 54]
Annual tax is not significant
The maximum indicated value
Allowed error coupons
Above 0.3HRA
+0.5HRI5N
The re-qualification is not great
The average
and the stability of the standard block are not greater than
Hard court range
(74~80)
(68~93)
HR15ST
[70-82]
JJG113—2003
shows ()
year stability is not greater than!
0.SJIR3ON
.6HR45N
Verification items and verification methods
Verification items are shown in Table 8:
Maximum indication
Allowable error
TO.5HHEON
±0.6IR45N
+0.6HR15T
±0.6HR30T
Table 8 Verification items
Verification items
Shape
Other requirements
Hardness value
Stability
Guda verification
Note: In the table, “+” indicates items that should be tested; “_” indicates items that may not be tested. 6.2.2 Calibration method
Reproducibility is not high
Subsequent calibration
Average hardness of standard block is 10
.5HH30N
O.61IR3ON
0.6HIR30T
Use monthly inspection
6.2.2.1 Hardness calibration shall be carried out on the standard machine. Before each calibration, the correction value of the standard machine shall be calculated. According to the hardness range of the hardness block to be tested, the standard block used for the indication of the corresponding calibration standard machine shall be used. The difference between the half value of the 5-point hardness value of the standard machine and the standard value of the standard block is the indication error of the standard machine. The image of the standard machine is equal to the indication error value and has the same sign.
Use it in a directional manner and firmly install it on the main shaft of the standard machine. Test the test block at least [100 times to make the standard mechanical parts in a working state. 6.2, 2.3
Before calibration, the hardness block should be wiped clean with gasoline or alcohol. The test can be carried out after the temperature reaches 2. 6.2.2.4
The speed of the pressure head approaching the surface of the quality block should not exceed 1mm/s. The pressure head should be in contact with the working surface of the hardness block, and the initial test force should be applied. The force should be applied smoothly. The initial test force should be maintained for no more than 3.
6.2.2.7 Align the indentation measurement device to the specified position, apply the test force steadily and without impact, and keep the total test force for (AK) scale (48)$, Y and T scale (1-4)Au within (5±1)5. The main test force shall be removed steadily within (2-3)3, and within (3-S)$. 6.2.2.8 During the calibration, the hard filter shall be moved from the workbench of the machine according to the standard. 6 points shall be measured on the hard filter. The first point shall be ignored, and the remaining 5 points shall be evenly distributed. The distance between the centers of two adjacent positive marks shall not be less than 4 times the diameter of the positive mark, but at least 2 times. The distance between the center of the indentation and the edge of the hard filter shall not be less than 4 times the diameter of the indentation, but at least 1 time. The average value of the five points, plus the correction value of the standard value, is the value of the standard value. The difference between the hardness value and the minimum value in the 5 points is the uniformity of the standard block. The uniformity shall meet the requirements of Table 2 in 4.1. 6.2.2.9 In the subsequent verification, the difference between the hardness value of this verification and the hardness value of the previous verification shall meet the requirements of stability in Table 2 in 4.1.
6.3 Handling of verification results
6.3.1 A verification certificate shall be issued to the standard block that has passed the verification according to the requirements of this regulation. A verification result notice shall be issued to the standard block that has failed the verification.
6.3.2 The hardness value of the standard block shall be engraved on the workpiece. 6.4 Verification cycle
For the standard block after the first verification, the verification cycle is 1 year; for the standard block that has passed the re-inspection after 1 year and meets the requirements of H stability, the verification cycle is 2 years.
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