Pistons & Pin

The process starts by preparing the alloy (as per the specification) from virgin raw materials by heating them to the desired temperatures on induction furnaces. The prepared alloy is then scooped up with a ladle from the crucible (the pot that holds the molten material) and carried to moulding furnaces for re-melting and material treatment. The alloy is now free from gases and other impurities and is now ready for production. The molten material is then poured into the die on semi-automatic squeeze castings line working under high pressures. The material is then allowed to cool before it is removed from the die. After the castings have had time to cool they are visually checked for defects by GOULD’s adroit staff, following which the casting has its runner & raiser removed by cutting on band saw machines.

The castings are then placed into a heat treatment plant (with specified temperature & duration) for tempering, which ensures an improved quality. Required hardness is achieved and pre-formed stresses are relieved through ageing process.

The machining cycle begins with various operations being performed in stages on fully & semi-automatic CNC machines and other Special Purpose Machines (SPM), to achieve the required shape and finish. Each machining cycle is done in modular assembly line (cell type) for an even greater concentration of quality & supply.

Subsequently, Semi-Auto boring along with cutting of groove for Circlips and Gudgeon pin bore is done on a six-station semi-auto bore machine. Burnishing of the pin bore is also done (by a diamond tool) for accurate grooving and a smooth finish.

Ring grooves are then cut with the help of solid carbide and Poly crystalline tools for fine cut and accuracy in micron tolerances. Holes are drilled within the grooves for burr free oil holes for lubrication purpose. Facility is provided for horizontal and cross hole drilling.

We at GOULD also take care that the turning of the crown/ dish making be carried out on CNC.

At every stage of the production, inspection is carried to insure all specifications are met as required. The facility is equipped with all the latest equipment like computerized Vacuum Spectrometers and Bond checking Machines, Metallurgical Microscopes, Universal Testing Machine, Surface finish measuring equipment, Profile checking machines etc. along with a team of qualified professional staff.

Video

Plant Photos

Anodizing Plant		CAD Designing		Foundry		Head Cavity Machine		Inspection		OD Checking
Oil Sloting		Oval Turning Machine		Pin Bore		Pin Bore Checking		Piston Pin Inspection		Ring Grooving CNC
Shop Floor 1		Shop Floor 2		Shop Floor 3		Shop Floor 4

PROCESS	MAKE
Semi Finish Turning CNC Machine	ACE, Bangalore
Locating seat boring & Facing CNC Machine	ACE, Bangalore
Rough Boring CNC Machine	SAM, Bangalore
Camless Turning O.D. Profile CNC Machine	Takisawa, Japan
Semi Finish Boring CNC Machine	SAM, Bangalore
Finish Boring CNC Machine	Takisawa, Japan
Combustion Chamber & Facing CNC Machine	ACE, Bangalore

 

Types of Pistons

Single Alfin   Hard Anodized   Dual Alfin   Graphite Coated   Tin Plated

Pin Bush   Collin Gallery   Phosphated   2 Piece Piston   Steel-Inserted Range: 25mm - 400mm Material: LM13, Hyper-Eutectic, LM28, Steel, Forged, Cast Iron Standard Material Composition Chemical Composition Si Cu Ni Mg Mn Ti Zn Al 11/13 0.8/1.5 0.8/1.3 0.8/1.3 0.2/max 0.2/max 0.2/max Rest The above metallurgical composition may vary with engine application, type of fuel burned (petrol, diesel or CNG), type of cooling (air or water cooled), & speed of the engine.

Range

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Air Compressor	Alfa Romeo	Audi	Avia Daewoo	Baudouin	Bedford	BLMC
BMW	Caterpillar	Chrysler	Citroën	Cummins	Dacia	Daewoo Chevrolet (GM)
DAF	Daihatsu	Daimler Mercedes Benz	David Brown	Fap Famos	FIAT	FIAT-Iveco
Ford	Fordson	GA3 Wolga	Guascor	Hatz	Hino	Honda
Hyundai	IFA	IHC - Case IH	Isuzu	John Deere	Kama 3	KHD
Kia	Komatsu	Lada	Lamborghini	Liaz	Liebherr	Lister
Lombardini	Lotus	M.A.N	Mazda	Mitsubishi	MMZ Minsk	Moskvitch
MWM	New Holland	Nissan	Opel	Pegaso	Perkins	Petter
Peugeot	Peykan	Porsche	Raba Hungary	Renault	Rover	Ruggerini
RVI	Saab	Same	Scania	SEAT	Skoda	Slanzi
Ssang Yong	Steyr	Subaru	Suzuki	Talbot	Tatra	Toyota
UAZ	Ursus	UTB	VM	Volkswagen	Volvo	Zector

Quality

Piston Form Checking Machine		Ultrasonic Bond Testing 1		Ultrasonic Bond Testing 2		Ultrasonic Bond Testing 3		Ultrasonic Cleaning
INSPECTION AVAILABLE IN-PLANT OUT SIDE   Spectra Scope Analysis   •   Tensile, Strength &  Fatigue •     Thermal expansion &  Volumetric stability •     Profile Testing (Vertical  &  Oval) •     Crack Detection •     Hardness •     Hydro-Pulsar •     Pin Boss stress  Calculation •     Solidification analysis •     Rotation bending fatigue  test, strength test-  Japan   •

Online Discounts

Avail this Special Offer:

Product Photo	Product Name	MRP	Discount Product	Available Store
	Enter Name	Rs.159.50	Product#15	12
	Enter Name	Rs.159.50	Product#15	12
	Enter Name	Rs.159.50	Product#15	12
	Enter Name	Rs.159.50	Product#15	12