Process capability maps

Initially, knowledge of the chosen manufacturing process is required. If the type of material is stated on the process capability map, assume m =1, otherwise proceed to A. 

Values of B relating to material compatibility for those processes where a material Is not defined on the process capability maps given (2) ... 

There is a material to process compatibility risk for impact extrusion, cold forging, cold extmsion, sheet metalworking, machining and powder metal sintering processes because their respective process capability maps relate to the ideal material case. 

SAND CASTING PROCESS CAPABILITY MAP FOR ALUMINIUM AND MAGNESIUM ALLOYS... 

IMPACT EXTRUSION PROCESS CAPABILITY MAP (RADIAL TOLERANCES ONLY)... 

Figure 2.11 Employment of the tolerance data In the generation of a process capability maps...

Constructing process capability maps from manufacturing data... 

Figure 2.13 Process capability map construction flow chart...

The measures of dimensional variability from Conformability Analysis (CA) (as described in Chapters 2 and 3), specifically the Component Manufacturing Variability Risk, q, is useful in the allocation of tolerances and subsequent analysis of their distributions in probabilistic design. The value is determined from process capability maps for the manufacturing process and knowledge of the component s material and geometry compatibility with the process. In the specific case to the th component bilateral tolerance, it was shown in Chapter 3 that the standard deviation estimates were ... 

Looking at the process capability map for turning/boring in Figure 4.42 gives a risk value, A = 1.05, for a dimension of 012 mm. This value defaults to the component manufacturing variability risk, q, when there is no consideration of surface finish capability in an analysis. 

CLOSED DIE FORGING PROCESS CAPABILITY MAP FOR LOW TO MEDIUM CARBON AND LOW ALLOY STEELS... 

Figure 4.51 Process capability map for closed die forging of steel...

Note The injection/compression moulding process capability maps 1, 2 and 3 are used for large parts with a major dimension greater than 50 mm typically and/or for large production volumes. Map 4 is for injection moulded parts that have a major dimension less than 150 mm and which are produced in small volumes. 

SAMD CASTJNG PROCESS CAPABILITY MAP FOR STEEL AND IRON... 

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