Consulting Services to the Metals Industry Growth of Dies During Heat Treatment Stephen P. Midson The Midson Group, Inc.

Consulting Services to the Metals Industry Previous study examined the bowing of die inserts during heat treatment Additional raw data was obtained from that study that provided information on growth/contraction of inserts during heat treatment Rough Machining of Dies

Consulting Services to the Metals Industry Method Used to Measure Growth Use CMM to measure locations of holes »Both before and after heat treatment »Measured shaft of taps for tapped holes Determined movement for each hole

Consulting Services to the Metals Industry Insert # 2 Insert size »24” by 21” 10¾” »Premium Grade H-13 Cooling rate from Austenitizing Temp »65.6 o F/min

Consulting Services to the Metals Industry Insert # 2 Shows amount of movement for each hole Data in thousands of an inch

Consulting Services to the Metals Industry Insert # 2 Summary of amount of movement for each hole

Consulting Services to the Metals Industry Insert # 2 Shows direction of movement for each hole Data in thousands of an inch

Consulting Services to the Metals Industry Insert # 3 Insert size »20” by 11½ ” 11” »Premium Grade H-13 Cooling rate from Austenitizing Temp »92.5 o F/min

Consulting Services to the Metals Industry Insert # 3 Shows amount of movement for each hole Data in thousands of an inch

Consulting Services to the Metals Industry Insert # 3 Summary of amount of movement for each hole

Consulting Services to the Metals Industry Insert # 3 Shows direction of movement for each hole Data in thousands of an inch

Consulting Services to the Metals Industry Insert # 2 » to inches »Average inches Insert #3 » to inches »Average inches Tool Builder »Leaves to inches for stock on holes & for clearance on threaded holes Summary of Data

Consulting Services to the Metals Industry Summary of Die Bowing Data Roche et al Midson Schwam et al

Consulting Services to the Metals Industry Future Work Use 3-D laser scanning to digitally capture shape of die insert Color-coded drawing compares to original shape

Consulting Services to the Metals Industry 3-D Laser Scanning Metron Systems »Die inserts up to 1,700-lbs »60” by 60” by 60” »Resolution ”

Consulting Services to the Metals Industry Evaluate feasibility of 3-D laser scanning »Identify suitable insert »Send to Metron Systems for measurement »Get color-coded model showing amount of distortion Research Proposal