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Material :
Material used for Reed valves are 20C, 7C27M02 & Hiflex
This material is purchased form Sandvik Materials Technology
Chemical composition Sandvik Sweden
of 7C27M02
| Elements |
C |
Si |
Mn |
Cr |
Mo |
| 7C27M02 |
0.38% |
0.40% |
0.55% |
13.5% |
1.0%\ |
| 20C |
1.00% |
0.25% |
0.40% |
- |
- |
High quality Martensentic chromium,
stainless steel, alloyed with molybdenum give better corrosion
resistant and higher fatigue strength resulting in a more
efficient compressor because of lower flow losses across
the valve.
Surfaces Finish.
Bright, fine & polished
Strip thickness max. 0.508 mm (<0.020 inch):
Ra = maximum 0.13 ~m (5.2 u inch)*
Rmax = maximum 1.5 ~m (60 u inch) |
Strip thickness
over 0.508 mm (.020 inch):
Ra = maximum 0.25 ~m (10 u inch)*
Rmax maximum 2.5~m (100 u inch)
*Cut off 0.25 mm (0.01 inch) |
FLATNESS - Extra accurate
This means a maximum out-of-flatness across and along
the strip of max. 0.20% of the nominal strip width.
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Features of IIS
Flapper Valve Reed
* High Fatigue Strength
* High Purity
* Good flatness & surface finish
* Fine thickness tolerances
* Radiused Edges
* High Service temperature
* Longer service life
* Cost saving & Low maintenance |
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Testing Facilities
IIS has in house testing facilities for mecl1anical,
Chemical, flatness, surface finish & edge radius. |
Quality
Assurance :
International Industrial Springs has a quality
Management System approved by internationally recognized
organization. We hold Quality System certificate approval
for ISO 9001:2000
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Manufacturing Facilities & Process :
1. Tool Design :
We have specialized engineers having good experience
in designing & manufacturing reed valves &
valve plates. Material used for Tool manufacturing
is wear resistant high speed alloy steel, heat treated
in special vacuum heat treatment furnace.
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2. Blanking :
Precision Power Presses
are used for blanking Flapper Valve Reeds. Fully
automatic strip feeding arrangement and precision
blanking presses enable us to produce quality reeds
with competitive prices.
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3. Finishing Process :
After blanking cold worked edges of reed valves
are rough and need to be well rounded. This can
be achieved by our proprietary process using Centrifugal
Finishing Machine.This process increases intensity
of compressive residual stresses on the surface
of reed valve. This process converts tensile stress
into compressive stress and greatly enhances the
fatigue strength of Reed Valves.
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4. Stress Relieving :
Reed valve are stress relieved in. order to reduce
the residual stress from blanking operation wherever
required Stress relieving is done on specially designed
furnace with specified temperature. |
Quality
Policy :
We are Committed to
Deliver, Quality Products and Services that
continuously meet the requirements of OUR CUSTOMERS
through continual TEAM WORK and improvement
of QUALITY MANAGEMENT SYSTEM. |
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Valve Plate & Assembly
Valve Assemblies are used in Air Compressors for
different types of applications. Valve Plates are
made from High Chromium Stainless Steel material.
Valve Plates are manufactured and heat treated in
precision SPM's. Faltness, Parallism and Surface finish
of Valve Plate is most important factor to increase
efficiency of compressor valves. We have all testing
facilities to Check Flatness, Parallism and surface
finish of valve plates. We have developed a unique
manufacturing process from our decades of experience
and research.
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