JB/T 10045.5-1999 This standard is a revision of ZB J59 002.5-88 "Gas Cutting Surface Quality Sample". During the revision, only editorial changes were made according to relevant regulations, and the technical content was not changed. This standard specifies the characteristics, structural parameters, manufacturing and measurement methods of gas cutting table samples. This standard is applicable to the evaluation of gas cutting surface quality samples. This standard was first issued on August 10, 1988. JB/T 10045.5-1999 Thermal Cutting Gas Cutting Surface Quality Sample JB/T10045.5-1999 Standard download decompression password: www.bzxz.net

JB/T10045.5—1999
This standard is a revision of ZBJ59002.5--88 "Gas cutting surface quality model". This standard replaces ZBJ59002.5-88 from the date of implementation. This standard is proposed and managed by the National Welding Standardization Technical Committee. The drafting unit of this standard: Harbin Welding Research Institute. The main drafter of this standard: Lv Zhenjie.
Machinery Industry Standard of the People's Republic of China
Gas cutting surface quality model
Thermal cutting
Thermal cutting--Model of surface quality for gas cuttingJB/T10045.5—1999
Replaces ZBJ59002.5—88
This standard specifies the characteristics, structural parameters, manufacturing and measurement methods of the gas cutting surface quality model. This standard is applicable to the evaluation of the gas cutting surface quality model. 2 Referenced standards
The clauses contained in the following standards constitute the clauses of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. JB/T10045.1--1999 Thermal cutting methods and classification JB/T10045.2-1999
Thermal cutting
JB/T 10045. 3-1999
3 Definitions
Thermal cutting
Terms and definitions
Gas cutting quality and dimensional deviation
Gas cutting surface quality samples are samples that characterize the different grade values ​​of the flatness (u) and cut depth (h) of the gas cutting surface. The grade values ​​are specified by JB/T10045.3.
4 Manufacturing method
4.1 The sample can be manufactured by one of the following methods: a) electroforming replication,
b) injection molding replication;
c) precision casting replication.
4.2 The surface of the original master mold used to replicate the sample must be a real cutting surface that reflects the characteristics of the gas-cut surface flatness (u) and cut depth (h) to be characterized, and must comply with the provisions of JB/T10045.3. 5 Surface characteristics
5.1 The texture of the sample surface should show the gas-cut texture characteristics it is intended to represent. 5.2 The color of the sample surface is required to be similar to the color of the actual cutting in production. 6 Form, size and parameters of the sample
6.1 The structural form of the sample should facilitate the comparison of the cutting surface and its own detection. 6.2 Each set of samples consists of 14 different samples, and the size and grade of the sample should comply with the provisions of Table 1. Approved by Guohao Machinery Industry Bureau on June 24, 1999 634
Implemented on January 1, 2000
Sample block number
Sample block determination
Sample block size
15×30
50×30
7. 1 Determination of flatness (u) value
JB/T10045.5—1999
Table 1 Sample block size and surface quality grade
Applicable comparison cut thickness
20～40
Quality level
Sample block surface quality grade
u value classification
Five-value classification
Measure along the cut thickness direction using a measuring instrument with a guide device and a measuring table. The probe angle is required to be 90°, the probe radius is ≤0.1mm, and the allowable error of the measuring instrument is 0.02mm. 7.2 Determination of the cut depth (h) value
Measurement is carried out by a precision measuring instrument that continuously detects along the cutting direction at two-thirds of the upper surface of the cut. The probe angle is required to be ≤90°, the probe radius is ≤0.01mm, and the allowable error of the measuring instrument is 0.002mm. 8 Marking Www.bzxZ.net
The sample must have the following markings:
a) JB/T 10045.5;
b) Quality grade of flatness (u) and cut depth (h); c) Applicable cutting thickness of the sample block;
d) Supervised by Harbin Welding Research Institute;
e) Manufacturer name and product serial number.
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