JB/T 10045-2017Thermal cutting - Geometrical product specification and quality (English PDF)

National Standard of the People's Republic of China

ICS

25.160.10

Replacing

JB/T 10045.1-1999

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

Contents

• 1 Scope
• 2 Normative references
• 3 Terms and definitions
• 4 Symbols and graphical definitions
• 5 Geometrical tolerances
• 6 Inspection of the quality of the cut surface
• 6.1 General principles
• 6.2 Measuring methods
• 7 Assessment of the quality of the cut surface
• 7.1 Characteristic values
• 7.2 Measuring range
• 8 Dimensional tolerances
• 8.1 General principles
• 8.2 Dimensional tolerances of unmachined workpieces
• 8.3 Dimensional tolerances of machined workpieces
• 9 Marking
• 10 Technical documents
• 10.1 Statement of the dimensions
• 10.2 Statement of the cutting quality and of the tolerance grade
• Annex A (informative) Cutting quality of the different thermal cutting processes
• Annex B (informative) Specimens of thermal cutting surface quality
• B.1 Definition
• B.2 Method of manufacture
• B.3 Surface characteristics
• B.4 Type of construction, dimensions and parameters of the specimens
• B.5 Measurement of the specimens
• B.6 Marking
• Figure 1 Drag
• Figure 2 Perpendicularity and angularity tolerance
• Figure 3 Mean height of the ripples of the cut surface
• Figure 4 Melting of the top edge
• Figure 5 Notch
• Figure 6 Graphical definition during the cutting of the workpiece
• Figure 7 Graphical definition after the cutting of the workpiece is finished
• Figure 8 Plane cut face
• Figure 9 Curved cut face
• Figure 10 Diagram of the geometrical tolerances of the cut workpiece
• Figure 11 Definition of the measuring range of the perpendicularity and angularity tolerance
• Figure 12 Perpendicularity and angularity tolerance
• Figure 13 Mean height of the ripples of the cut surface
• Figure 14 Dimensional deviations of the unmachined part
• Figure 15 Dimensional deviations of the machined part
• Figure A.1 Perpendicularity and angularity tolerance - cutting thickness not greater than 30 mm
• Figure A.2 Perpendicularity and angularity tolerance - cutting thickness not greater than 150 mm
• Figure A.3 Mean height of the ripples of the cut surface - cutting thickness not greater than 30 mm
• Figure A.4 Mean height of the ripples of the cut surface - cutting thickness not greater than 150 mm
• Table 1 Precise measuring instruments
• Table 2 Coarse measuring instruments
• Table 3 Reduction of the cutting thickness
• Table 4 Perpendicularity and angularity tolerance
• Table 5 Mean height of the ripples of the cut surface
• Table 6 Limit deviations of the nominal dimension - tolerance grade 1
• Table 7 Limit deviations of the nominal dimension - tolerance grade 2
• Table 8 Machining allowance
• Table B.1 Dimensions of the specimens and grades of the mean height of the ripples