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Browsing by Author "Purcell, J."

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The application of the numerical method of evaluating the efficiency of grinding wheels and coolants for grinding nickel chromium alloy to specification E.P.K.31 (Henry Wiggin Ltd.) also the evaluation of surface residual stresses induced into the material by grinding: progress report no. 2

Purcell, J. (College of Aeronautics, 1963-12)

SUMMARY The material is presenting phenomena which though met and recognised previously the significance to the grinding process was on these previous occasions not critical. With this material, instead of a wheel life ...
An interim note on machining super high tensile steel

Purcell, J.; Ellis, P.J.; Vicary, D.P. (College of Aeronautics, 1958-09)

A series of tests have been carried out to determine the machinability characteristics of Ultra High Tensile Steels in the 120 tons sq. ins. T/S range with hardness values of 550 to 600 V.P.N. Tool geometry and cutting ...
Machinability investigations into special materials. Part 1 stainless steel Rex 448 hardened and tempered to Brinell minimum 321, maximum 375

Purcell, J. (College of Aeronautics, 1954-11)

This Report deals with the machinability of Firth-Vickers materials. Reference REX WO (Stainless Steel) in the hardened and tempered condition* U,T.S 70-75 tons; Brinell hardness 321 minimum, 375 maximum. CONTENTS: SECTION ...
Machine tool laboratory: appendix A to progress report no. 2 on the investigation into grinding of nickel chrome alloy EPK31 produced by Henry Wiggins

Purcell, J. (College of Aeronautics, 19)

Introduction The work on the comparative tests of the effectiveness of coolants has continued. A wide range of soluble type coolants and straight oil coolants have been evaluated. The results of these tests are presented in ...
A note on an investigation of the surface grinding process with examples of wheel and coolant selection and planning data

Purcell, J. (College of Aeronautics, 1956-02)

This note deals with an investigation into the establishment of manufacturing techniques, on a production scale, for surface grinding, high tensile heat resistant alloy sheet approximately 7 feet by 5 feet. Rigid ...
A note on surface grinding :|bstayblade, in the fully hardened and tempered condition UTS, 80 tons per sq. in., V.P.N 390.

Purcell, J. (College of Aeronautics, 1957-01)

SUMMARY The investigation carried out into surface grinding Stayblade shows that this material presents severe conditions to the grinding wheel, and the grinding wheel face is broken down fiarly quickly. The method ...
A note on the machinability of ultra high tensile steel

Purcell, J. (College of Aeronautics, 1957-01)

The requirements of this investigation were to determine optimum tool geometry and cutting conditions for turning Ultra High Strength Alloy Steel (fully heat treated to 120 tons per sq.ins.). The material will be used ...
A progress report on the application of numerically controlled grinding to the improvement of the fatigue strength of highly stressed ground gears

Purcell, J. (College of Aeronautics, 1963-07)

During the manufacture at the Bristol Aeroplane Works, of the research Aircraft, Bristol 1880 difficulty was experienced when attempting to grind sheets of stainless steel (spec. REX 443). The size of the sheets was 7 ...
A report on a series of tests carried out to determine the suitability of the grinding process for evaluating the efficiency of coolants to be used on the metal cutting processes process for evaluating the efficiency of coolants to be used on the metal cutting processes and also to evaluate the relative efficiency of 4 coolant samples for the drilling and turning processes

Purcell, J. (College of Aeronautics, 1966-04)

A test programme was to be carried out to evaluate a series of additives for use in industrial metal cutting coolants for use initially on the turning, drilling and milling processes. These tests when they take the form ...
A report on the survey carried out at W. H. Allens, Queens Works, Bedford

Purcell, J. (College of Aeronautics, 1966)

The original terms of reference under which the project was undertaken are included in this report and the requirements requested are satisfied. On initial contact at Aliens, I was introduced to Mr. Colson, who informed ...

Browsing by Author "Purcell, J."

Browsing by Author "Purcell, J."

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