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  • Surface texture and edge tolerances
  • Casting and Forging 1
  • Casting and Forging 2

What is it?

This one-day course is normally offered as an additional module, integrated with one of our geometrical tolerancing or GPS courses, but can also be provided as a standalone course.

Surface texture tolerances have changed very rapidly in recent years, and all of the current standards have been changed since 1996. This course brings delegates up-to-date with the use of the machining symbol, and the current system of annotation for specifying surface texture requirements to BS EN ISO 1302, as well as running through some of the more important parameters that can be used.

In addition, the course covers two areas of tolerancing that are rarely utilized; the surface imperfection parameters in BS EN ISO 8785, which may be of use to those manufacturing composite components, and the specifications ‘for edges of unidentified shape’ in BS ISO 13715, which provide a system for defining the amount of ‘burring’ or ‘blunting’ that is permitted on ‘unbroken’ edges (i.e. edges without radii or chamfers).

  • Learn about surface profiles, roughness and waviness.
  • Find out why there is more to surface texture than Ra or Rz.
  • Discover how to tolerance edges.

Duration

1 day.

Who is it for?

Engineers, designers and technicians.

What does it cover?

  • introducing surface texture
  • how surface texture is measured
  • use of the machining symbol
  • surface characteristics
    • profile
    • roughness
    • waviness
  • common parameters
  • filtration and transmission bands
  • surface imperfection parameters
  • edge tolerances
  • standards
    • current BS & ISO standards
    • future developments

What is it?

BS ISO 10135 is the standard covering engineering drawing indications for ‘moulded’ components.  Although some of this is applicable to plastic injection moulded parts, it is mainly aimed at casting and forging processes.

The standard has recently been revised, and specifies annotation and symbology that can be used to indicate appropriate tooling and part requirements.

This course is designed to explain the use and application of the symbols and annotation in an accessible and practical manner.

This half-day course can be provided as an additional module, integrated with one of our other courses, or as a standalone course.

Duration

½ day.

Who is it for?

Engineers, designers and technicians involved in the design and manufacture of moulded, cast or forged components.

What does it cover?

how to use drawing indications for:

  • parting surfaces
  • markings on tools and inserts
  • permitted elevation/depression of ejectors
  • permitted mismatch of tool cavities or inserts
  • permitted levels of flash
  • size and extent of sink marks
  • draft angles

What is it?

BS EN ISO 8062-3:2007 covers machining allowances, general dimensional and geometrical tolerances for cast and forged components. A range of tolerance grades are listed, relating tolerances to material, process and size of the part.

This course is designed to explain the use and application of the standard in an accessible and practical manner.

This half-day course can be provided as an additional module, integrated with one of our other courses, or as a standalone course. It works well as an additional module on the Introduction to Geometrical Tolerancing course.

Duration

½ day.

Who is it for?

Engineers, designers and technicians involved in the design and manufacture of cast or forged components.

What does it cover?

  • introduction to the ISO 8062 series of standards
  • tolerance grades for linear dimensions
  • surface mismatch
  • wall thickness
  • datums for general geometrical tolerances
  • grades for general geometrical tolerances
  • general geometrical tolerance characteristics
  • machining allowance grades
  • markings on drawings