An ISO 9001:2000 certified company, offering a range of Grate Plate, Rake Wheel Ø 800, Hammer, Bowl, Mantle, Jaw Plates, Grinding Ring Segment, Ledge Cover, etc.

About Us

With over 37 years of experience in the production of cast engineered products, we, Northern Alloys Bhavnagar Limited, have gained a celebrated position in the contemporary market. Our company is a manufacturer, supplier and exporter of high quality steel and special alloy steel castings for service in wear resistant and high temperature environments. Our superior quality products include Jaw Plates, Grinding Ring Segment, Ledge Cover, Grate Plate, Hammer, Bowl, Mantle etc. Our products are known for their hardness, wear and abrasion resistance and hence are highly demanded. We are proud to say that we understand the requirements of the clients as well as the environment conditions and hence offer effective end products.

Backed by our well equipped infrastructure and extensive research and innovation, we have carved a niche in our domain. Our modern infrastructure is specially designed and built by our dedicated engineers incorporating various modern machineries and production techniques. Moreover our stringent quality policy ensures optimum performance level of each product. Leveraging on our qualitative products, we have a long list of esteemed clients and we can also develop customized items for Department of Atomic Power Station, Critical impellers for under Sea Water applications with approval under DGQCA. Our export market includes USA, UAE, UK, Srilanka, Canada etc.

Quality Conformation

Our company is an ISO 9001:2000 certified company and hence we strive continually for the betterment of the quality. Our products are checked on various parameters including the quality of raw materials used. After stringent inspection process, the consignment is dispatched to the customers. Some of the machines which we use in the quality testing process are mentioned below:

Quality Checking Process

We are performing various physical and chemical tests on our products, in conformation with the intustry recommended standards. These tests includes various checks and procedures such as Pattern Making / Methoding, raw material checking, melting, chemical checking, moulding, Sample Inspection, In Process Control, Knock off / Heat Treatment and others. All of these are explained below:

Pattern Making / Developing : On receipt of purchase order, job card is prepared & thereafter method-Runner, Riser and construction of pattern is decided looking to the intricacy and quality so required, whether wooden or Metallic patterns & match plate designs etc. Lay out is being carried out for radius curvature, assembly match etc. and the sample casting is cast.

Raw Material Checking: The raw materials used in our products like Sand/Foundry Fluxes, Additives, M.S. Scrap & Basic Ferro Alloys along with virgin metals are checked in Spectro/Labs to ensure their superior quality. Foundry Fluxes are being procured as per our standards requirement, with Batch Nos. and Test Reports which is essential so as to achieve quality castings.

Melting : This is being done by standard Melting practice adopted by the foundries. Every Heat Scrap is accurately weighed with the addition of Ferro Alloys, which are required as per chemistry to maintain the ratio for achieving the results. To ensure quality results, every heat is checked with the Temp master for Temperature before Tap on FERROLAB-III thereby sample prior to tap is obtained for Spectro analysis, which takes about 5 seconds for report and thereafter metal if okayed, is tapped & and poured in the moulds. Every Heat tapped will correspond to Heat No. marked on casting if require and can be cross-checked with T.C.

Chemical Check : Each and every heats are being checked on Spectro prior to Tap of heats.

Test Bars : These are performed as per the customer specification and used material. These are cast integrally or separately for checking hardness, tensile testing etc.

Moulding : Moulding is done by Pneumatic ramming process, i.e. by hand moulding or machine moulding. We also have installed high pressure moulding machine 2 nos -type FOROMAT 20-1 imported from Germany. Moulding process is being decided whether moulds to be prepared from Green Sand or CO2 sand process / Nobake , depending upon the items to be manufactured. Sand is prepared with the help of sand Mills. Binding material is to be added like Bentonite, Dextrine, Sodium Silicate, Molasses etc. After sand is prepared, sand sample is tested on our Lab. for compressive strength, Permeability etc. In moulding as well as in core making special sand is required which depends on intricacy of casting / heavy casting, i.e. Olivine, Chromite, Zircon sand etc.

Sample Inspection : Sample inspection is carried out after production and before we release our products. Here the products are checked for dimension, machining allowances as per drawing & for the quality. Whether runner, riser provided as per requirement. If not, then methoding to be changed with joint discussion & for further improvements, change if any incorporated or put on job Card's to follow there upon.

In Process Control : In process control like chemical composition, Moulding quality or any foundry defects, these are checked by our quality department. (Moud Hardness, finish etc.)

Knock off / Heat Treatment : After casting is poured given suitable time for cooling, knock out is carried out on the knock out Machine by way of which casting is separated from the mould box. Sand is conveyed back by conveyor system automatically to Hopper for re-use.

Fettling / Shot Blasting : After the casting are heat treated, they are further taken for fettling by swing Grinders/Hand Grinders to smoothen the surface finish. Shot blasting is also carried out as per the client's requirement.

Once all the products are finalized, we carry out the the final inspection on them. This is via the procedure of marking. Also, gauges are used for this process. Details of final inspection is as follows:

Marking : Our monogram 'NAB' is cast on each every casting.

We offer a comprehensive gamut of products which are of excellent quality. They are manufactured from quality raw materials and components and hence have striking features. They are dimensionally accurate and long lasting. Our range includes:
 

Well Equipped Infrastructure

We are empowered by advanced machineries and latest technology and facilities. This enables us to manufacture quality casting from 10 Kgs. to 1500 Kgs and meet the bulk requirement of 3 M.T. We have standby power up to 1250 KVA D.G. Sets for uninterrupted power supply. Our well equipped infrastructure is segregated in various sections to maintain the smooth and flawless production process. Some of our sections include Moulding Section, Melting Section, Heat Treatment, Fettling etc. We are discussing our various sections and shops as below with the available machineries in them:

Pattern Shop

Our Pattern Shop and ancillaries are well equipped with all the requisite facilities needed for manufacturing wooden patterns.

Over the years, we have attained a broad client base in the domestic as well as the global market owing to our efforts in offering customization in our widest ranges of products. We are assisted by a well equipped R&D department which enables us to tailor our products as per the specifications and requirements of our clients. Our esteemed clients are mentioned below:

Due to our excellent quality of products and on-time delivery assurance,  we have set a strong foothold in the international market. Our range is immensely demanded and widely appreciated. Our export market includes:

Why Us?

We are the front runners in the industry and are acclaimed worldwide for our range of products. The reason behind our booming success are mentioned below: