Melting Furnaces
Rainbow Technocast Pvt. Ltd. operates Inductotherm Make Induction Furnaces to ensure consistent metallurgy and controlled melting parameters for critical cast iron components.
Installed Capacity:
- 500 kg (550kW) Furnace - 500kgs per 30 minutes
- 500 kg (350kW) Furnace - 500kgs per 60 minutes
Our melting process ensures precise chemical composition control, optimized Carbon Equivalent (CE), controlled superheating temperature, and uniform molten metal quality. Spectrometer verification and standardized alloy addition practices ensure repeatability, casting integrity, and compliance with OEM quality requirements.
Automatic Green Sand Plant
Rainbow Technocast Pvt. Ltd. operates a DISA Make Fully Automatic Green Sand Plant to ensure consistent molding sand preparation and repeatable casting quality.
Key Features & Process Controls:
- Automatic sand mixing system with integrated sand cooler
- Controlled monitoring of Moisture %, AFS (Grain Fineness), Permeability, and Green Compression Strength
- Uniform sand properties for improved surface finish and dimensional accuracy
- Rail-type pouring line for smooth and controlled production flow.
Automatic Moulding Machines
Our moulding operations are driven by DISA ARPA Simultaneous Moulding Machines (2 Sets), designed to meet high-volume automotive OEM requirements with superior process stability and dimensional control.
Key Features & Process Controls:
- High-speed, simultaneous vertical moulding for improved productivity and repeatability
- Tight dimensional control through consistent mould density and compaction pressure
- Controlled mould hardness and alignment for reduced mismatch and improved casting accuracy
- Optimized gating and feeding compatibility for defect prevention
- Rail-type pouring line ensuring synchronized, continuous, and controlled casting operations
Shell Mould Production Line – Dedicated for Cylinder Head
Rainbow Technocast Pvt. Ltd. operates a dedicated Shell Moulding Production and Assembly Line exclusively for Cylinder Head manufacturing.
Installed Infrastructure :
- SUSHA - 1215 VTA - 20 Sets Full Automatic Shell Moulding Machines.
Process Strengths:
- Tight dimensional control for critical combustion and coolant passages
- Superior surface finish minimizing machining stock removal
- High core strength and thermal stability for complex internal geometries
Automatic Production Line – Cylinder Head
Rainbow Technocast Pvt. Ltd. operates a Rail-Type PLC Based Automatic Pouring & Transfer Line dedicated for Cylinder Head production, ensuring synchronized and controlled material movement across critical process stages.
Installed Infrastructure:
- Rail-Type Trolley based PLC Controlled Automatic Pouring & Transfer Line.
Process Strengths:
- Programmable logic control for synchronized and repeatable operations
- Controlled transfer movement minimizing handling damage and misalignment
- Improved process flow efficiency and reduced cycle time variation.
Surface Finishing & Shot Blasting
Rainbow Technocast Pvt. Ltd. operates advanced shot blasting systems to ensure controlled surface cleaning and preparation of cast iron components prior to machining, inspection, and coating processes.
Installed Infrastructure:
- Wheelabrator - 48” Double-Door Shot Blasting Machine
- Wheelabrator - Tumblast Shot Blasting Machine – Model TBR-6
Process Capabilities
- Effective removal of adhered sand, scale, and surface contaminants
- Uniform and controlled surface finish across complex geometries
- Optimized surface condition for machining accuracy and paint adhesion
Material Testing & Sand Testing Laboratory
Rainbow Technocast Pvt. Ltd. operates a fully equipped Material & Sand Testing Laboratory to ensure metallurgical consistency, sand quality control, and compliance with automotive OEM standards.
Metallurgical & Mechanical Testing Equipment
- Brukar - Q4 Tasman Optical Emission Spectrometer (1 No.)
- Suyash - Portable Temperature Indicator / Pyrometer (2 Nos.)
- Suyash - Online CE Meter for Carbon & Silicon Determination (1 No.)
- FIE / UTE 20 - Electronic Universal Testing Machine with Software (1 No.)
- Soraj / B3000 - Brinell Hardness Tester 3000 kg (1 No.)
Sand Testing & Foundry Control Equipment
- Kelsons - Compactability Tester (1 No.)
- Kelsons - Universal Strength Machine with Computer Interface (1 No.)
- Kelsons - Electric Permeability Meter (1 No.)
- Kelsons - Sand Siever (1 No.)
- Kelsons - Sand Rammer Machine (1 No.)
- Kelsons: Muffle Furnace (1 Nos)
- Kelsons: Clay Washer (1Nos)
Inhouse Machine Shop
Rainbow Technocast Pvt. Ltd. operates a modern machining facility designed for high-precision machining of cast iron automotive components, ensuring strict compliance with OEM dimensional and quality requirements.
Installed Machining Infrastructure
- VMC (Vertical Machining Centers): 30 Nos.
- HMC (Horizontal Machining Center): 1 No.
- VTL (Vertical Turning Lathe): 2 Nos.
- CNC Machines: 6 Nos.
Machining Capabilities
- High dimensional accuracy and repeatability for critical automotive components
- In-house finish machining ensuring full process control
- Dedicated machining line for Cylinder Head components
- Capability to maintain tight tolerances and complex geometries
These machining facilities support consistent process capability, precision manufacturing, and reliable performance aligned with stringent automotive OEM specifications.
Standard Room – Precision Inspection Facility
Rainbow Technocast Pvt. Ltd. maintains a dedicated Standard Inspection Room equipped with advanced measuring and inspection instruments to ensure precise dimensional verification of components.
Inspection Capabilities
- Controlled inspection environment for accurate dimensional measurement
- Verification of components strictly as per customer drawings and specifications
- Use of calibrated measuring instruments ensuring accuracy, traceability, and compliance with quality standards
In-House CMM & Gauging Machine Facility
- ZEISS Make Coordinate Measuring Machine (CMM): 1 No.
- Renishaw Equator 300 Gauging System.: 1 No.
Dedicated In-House Pattern Shop
- Our pattern shop enables:
- New pattern development
- Design modifications
- Faster turnaround for sampling and production
Having pattern-making capabilities in-house allows us to maintain confidentiality, accuracy, and faster response to customer requirements.
