PROCESS CAPABILITIES

With the help of extensive knowledge and experience we have successfully achieved some of the toughest goals. Primary reason behind this success is our team work and willing to accept challenges.

3 mm through gap is maintained by process control.

As cast 1 mm gap is controlled as per customer requirement.

Uniform wall thickness 2.5 mm (for entire casting)

Wall thickness 1.5 mm on specific region of casting.

As Cast Serration with dimension of 0.6×0.3 mm per single serration.

Tolerance Standard

  • DIN ISO 2768

General Tolerance for linear and angular dimensions without individual tolerance.

  • P 690

VDG- reference sheet, investment castings dimension tolerances.

Visual Standard

  • MSS -SP-55

Quality standard for steel castings for valves, flanges and fittings and other piping components visual method.

  • ASTM A 997

Standard specification for investment castings surface acceptances standards visual examination.

Weight Range For Investment Castings

  • Minimum Wight : Few Grams
  • Maximum Weight : 80 Kgs Single Piece Weight

Dimensions

  • 600 x 600 x 600 mm

Technical Data Sheet

  • Linear Tolerances
Dimensions in Inch Dimensions in mm
Dimension Normal Premium Dimension Normal Premium
up to 1/2 ± 0.007 ± 0.003 up to 12.7 ± 0.18 ± 0.08
1/2 to 1″ ± 0.010 ± 0.005 12.7 to 25.4 ± 0.25 ± 0.13
1″ to 2″ ± 0.015 ± 0.010 25.4 to 50.8 ± 0.38 ± 0.25
2″ to 3″ ± 0.020 ± 0.015 50.8 to 76.2 ± 0.51 ± 0.38
3″ to 4″ ± 0.025 ± 0.018 76.2 to 101.6 ± 0.64 ± 0.46
4″ to 5″ ± 0.030 ± 0.020 101.6 to 127.0 ± 0.76 ± 0.51
5″ to 6″ ± 0.032 ± 0.022 127.0 to 152.4 ± 0.81 ± 0.56
6″ to 7″ ± 0.035 ± 0.025 152.4 to 177.8 ± 0.89 ± 0.64
7″ to 8″ ± 0.038 ± 0.028 177.8 to 203.2 ± 0.96 ± 0.71
  • Tolerances for Linearity, Flatness, Parallelism, Line and Area Shape
Length of Toleranced Element Permissible Dimensional Variation
Upto 25 mm 0.15 mm
25 to 50 mm 0.25 mm
50 mm 0.6%
  • Dimensions for Holes, Blind holes, Channels, Slots, Grooves
Hole Dia. or Groove/Slot width d(mm) Greatest Length/Depth Greatest depth, bottom
Through hole l Blind hole t Open l Closed t
>= 2 up to 4 =~ 1 X d =~ 0.6 X d =! 1 X d =~ 0.6 X d
> 4 up to 6 =~ 2 X d =~ 1.0 X d =~ 2 X d
> 6 up to 10 =~ 3 X d =~ 1.6 X d =~ 3 x d =~ 1.6 X d
> 10 =~ 4 x d =~ 1.6 X d =~ 4 x d =~ 2.0 X d

TECHNICAL NOTE: Product drawings received from customers are reviewed for process feasibility, tolerances etc. If required, commented drawings will be sent to customers for their opinion & approval before commencing die development work after receipt of purchase order. ( For Investment Casting Tolerances, Reference document is IS 11166 CLASS II )