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TRANSCRIPT
SHREERAM ENGINEERS
Shreeram Engineers warmly
welcomes you all to this presentation
giving an overview of its products and
services
The firm is a reputed and reliable
manufacturer of Heat – and related
wear & corrosion – Resistant Cast
Alloy Steel Products
Company Background
This firm was founded in 1974 by Late Shri
Arvind Koparkar.
Ever Since its inception, the firm is well-known for
product reliability and services.
Our products are mainly tailor-made as per the
customer’s requirements and to that end, we
provide continuous support towards design,
development and implementation of the solution
to satisfy the customer’s expectations.
Our vast experience for last 34 years enables us
to offer quality solutions to difficult problems with
consistency.
Product Range
High Alloy Steel castings for furnace parts such as
hearth supports (piers), charging rails, forks and skids,
fans & shafts for high rpm and high temperature
services, furnace doors, static cast radiant tubes etc
Gear heat treatment fixtures for various types of
furnaces such as batch type, continuous type, pit type
etc.
Forging heat treatment fixtures for continuous and
batch type furnaces
Product Range (cont’d)
Cast link conveyer belt and driving drum assemblies for precision treatment of parts having stringent accuracy requirements, for e.g. bearings
Welded muffles – for extremely controlled atmosphere heating and sintering of powder metallurgy components
Crucibles for handling molten aluminum
Burners for non critical requirements
Valve bodies (customer designed and supplied pattern)
Industries Catered
Automobile
Gear
Forgings
Heavy Engineering Majors
Furnace Manufacturers
Process industries (very small percentage and highly specific applications)
Bearing Industry
Powder metallurgy
Commercial Heat treating shops
Salient features of our
products
Our products are intended to be used where the service temperatures are in the region of 600 - 1050 deg Celsius.
We can cast products with single piece weight ranging from 50 grams to 225 Kg.
These products are designed and manufactured to deliver sustained performance at these temperatures and withstand severe operating conditions of high heat, heating atmosphere induced corrosion, frictional wear and tear at high temperature, thermal shocks due to sudden cooling, corrosion due to cooling media etc
Prospective applications other than our current range include Cement industry, Refineries and Power plants to name a few.
Advantages of using cast
products
Initial Cost: Moderate initial costs for proving out
application
Strength: Inherently stronger at elevated temperatures
than wrought alloys
Shape: Highly complicated designs can be cast
relatively easily as compared to other modes of
manufacturing
Composition: Since casting is the primary process in
any steel production, composition can be designed
and controlled precisely as required
A note on processes and
infrastructure
Our factory is located at Badlapur near Mumbai
These are reasonably well-equipped with medium-frequency induction furnaces, mechanization with respect to molding and shot-blasting.
Relevant testing is done at each stage of production; We conduct tests to verify the sand and mould properties, melt composition and internal structure of final products
Our Office located at Goregaon, Mumbai serves the other business functions of sales, accounts etc.
A note on processes and
infrastructure
The mould testing and temperature measurement is done in-house
Chemical test for raw material/finished casting, and radiography/ultrasonic testing for internal flaw detection is out-sourced to reputed, government approved organizations
Basic machining facilities are available in-house while any bulk/specialized machining is out-sourced
Our Mumbai office also incorporates a design department which is equipped with modern CAD CAM systems to design and analyze parts and patterns
Summary of factors
deciding steel selection
A general classification for these steels would be
“Materials for elevated temperature applications”
These are generally austenitic steels which fulfill
certain specified values/requirements for the following
chief criteria:
Ease of fabrication/casting/welding properites
Impact resistance
Erosion resistance
Resistance to cavitation (applicable in certain cases with
fluid flow)
Economy of production
Repeatable verifiable behavior
Summary of factors for
steel selection
Creep resistance
Fatigue resistance
Thermal shock resistance
Fracture properties
Oxidation and hot corrosion resistance
Stress-to-rupture values
Major groups of alloys
manufactured by us
The types of steel manufactured by us can be divided
into 3 general categories:
Chromium base steels – suitable for low temperature
applications but tolerant of highly corrosive environments
Iron base steels – suitable for moderate to high
temperatures with slightly corrosive atmospheres
Nickel base steels – these are special superalloys designed
for superior performance in extreme conditions. These are
generally designed and made for specific applications and
require greater control in production than other steels
A small variety of our
products
In the following slides are scanned photos of some of
our products with brief explanations where possible.
We thank you for your very precious time and hope
that the following slides will help in understanding our
products and services.
Furnace parts – fans
Cast and fabricated fans with integral / assembled shafts suitable for high temperature service.
Dynamically balanced for high rpm
Used to make the conditions in the furnace uniform
Furnace parts – support
Cast support weighing approximately 130 kg used as a support for furnace floor where heavy loads are to be handled. Can withstand high temperature of the furnace.
Welded muffle assembly for controlled atmospheres Welded muffle assemblies (about 8.5 m long weight approx 2 tons) are required for critical operation of sintering in products made from metal powders. The muffle allows a controlled environment which is essential for treating metal powders. Integral cast baffles are provided on the individual pieces to improve circulation and create uniform conditions. One end is fixed and other free for expansion. High pressure, leak-resistant, corrosive atmosphere, high temperature – severe application
Cast links, assembly of links and driving drum assembly for variety of handling applications
Cast link conveyer belts are used for a wide variety of applications ranging from light forgings which require uniform through heating and individual quenching to precision bearings which need to be delicately handled in a controlled atmosphere.
In these applications, repeated procurement of fixtures proves very costly and a one-time large expense can be justified. Moreover, atmosphere control necessitates such an investment.
Assemblies for gear heat treatment
Shown here are fixture assemblies for heat treatment of various types of gears in different types of furnaces – continuous and batch.
The various parts such as assembly base, rods, pipe, grids, pillars bushes, locking arrangement are all cast alloy parts
Assembly for charging and carrying material through furnace – for handling of forged parts in large volumes
The above photo is of assembly for charging and carrying material into high temperature hardening furnace, through quenching and again for tempering/ stress relief operation.
It is generally used for handling of bulk volumes of forgings castings etc which are not in machined condition and therefore don’t need precision handling.
Like all our castings these are designed for minimum weight , provision for uniform heating and cooling and optimum number of cycles.
Various types of charge carriers for different types of furnaces, loads, capacities, components etc
We also manufacture combinations of cast and fabricated, welded parts as per the design requirement