Definition: What Is Heat Tracking?
Heat tracking in foundry ERP is the digital recording of every melting heat — capturing the charge composition (raw materials added and their weights), furnace temperature and pour time, alloy grade achieved, and the castings produced — with a unique heat number that links forward through quality inspection and dispatch, enabling full backward traceability from any casting or customer shipment to its exact source melt.
In a foundry, a heat (also called a melt) is a single batch of molten metal produced in one furnace cycle. Raw materials — pig iron, steel scrap, ferro-alloys, and casting returns — are charged into an induction or cupola furnace, melted together, adjusted to the target chemistry, and poured into moulds to produce castings. Every heat is a discrete, traceable production event.
Heat tracking ERP assigns a unique heat number to each of these batches and links it digitally to every downstream record: the castings poured, the quality inspection results, the machining operations, and ultimately the customer dispatch. This creates what foundry quality engineers call a complete material traceability chain — the ability to answer two questions in seconds:
- Forward: "Which castings and which customer shipments came from heat number H-2024-187?"
- Backward: "Which heat was used to produce the casting in this customer complaint, and what raw materials went into it?"
Why Heat Tracking Matters for Indian Foundries
India ranks second globally in casting production (AFS World Casting Census 2023) with 5,000+ foundry units producing 12 million tonnes of castings annually (IIF 2024). The majority of these foundries — particularly the 70% supplying automotive, pump, and engineering OEMs — operate in an environment where heat-level traceability is no longer optional.
1. Automotive OEM Compliance
Foundries supplying Tata Motors, Mahindra, Maruti Suzuki, Hero MotoCorp, and Bajaj are required to maintain heat-level traceability as part of IATF 16949 automotive quality system certification. When an OEM reports a field warranty defect, the foundry supplier must trace the affected casting to its production heat within hours — not days. Foundries unable to provide this response risk losing approved vendor status.
2. Rejection Root Cause Analysis
Most foundries know their overall rejection percentage but cannot identify why rejection is occurring. Is it a specific raw material batch? A furnace charge ratio? A particular pouring operator on night shift? Without heat-level data linking rejections to their source conditions, this question cannot be answered. With heat tracking, rejection is recorded against the heat number — enabling multi-dimensional Pareto analysis that identifies controllable root causes within days of implementation.
3. Export Certification Requirements
Indian foundries exporting to Europe, the USA, or the Middle East face customer requirements for Material Test Reports (MTRs) that reference a specific heat number and its chemical composition. Without digital heat records, this documentation is prepared manually from paper registers — a process taking 2–3 days per shipment. Heat tracking ERP generates the MTR automatically at dispatch in seconds.
How Foundry ERP Automates Heat Tracking
Manual heat tracking — paper charge sheets, furnace registers, and lab notebooks — creates data that cannot be searched, linked, or analysed. Foundry ERP replaces this with a digital heat record that is created at the start of every melt and automatically linked to every downstream production and quality event.
Charge Composition Entry
The furnace operator enters the charge — pig iron grades, scrap types, ferro-alloy additions, and returns — with exact weights. ERP auto-calculates the expected chemistry from the charge mix, alerts if it will be outside grade specification.
Heat Number Assignment
ERP assigns a unique heat number automatically (e.g. H-KLP-2025-0187) as soon as the heat record is created. This number is the primary key linking all downstream records to this melt.
Furnace and Pour Parameters
Tapping temperature, hold time, inoculation treatment, and pour start/end times are recorded against the heat number — either manually by the operator or automatically through IoT sensor integration.
Chemistry Analysis Linkage
Lab spectrometer results — carbon, silicon, manganese, sulphur, phosphorus, and alloy elements — are entered or imported against the heat number. ERP compares against grade specification and flags any deviation before pouring is committed.
Casting Production Recording
Castings poured from the heat are recorded by item, mould number, and cavity — linking the physical production output back to the specific heat. Barcode or RFID tags can be printed per casting at this stage.
Rejection Linked to Heat
When castings are rejected at inspection, the rejection is recorded against the heat number along with defect code, cavity, and operator. This enables the multi-dimensional Pareto analysis that drives rejection reduction.
Dispatch and Certificate Generation
When castings from this heat are dispatched, the system automatically generates the Material Test Report with heat number, chemistry, and hardness — ready for customer submission in seconds, not days.
Manual vs ERP Heat Tracking — What Changes
| Aspect | Manual (paper register) | With Foundry ERP |
|---|---|---|
| Heat number assignment | Manual, often duplicated | Auto-generated, unique |
| Charge composition record | Paper sheet, filed by date | Searchable by heat, date, grade |
| Rejection linkage | Separate register, no linkage | Linked to heat — Pareto instant |
| Traceability query response | 2–3 days of register search | 30 seconds from any heat/cast |
| Material Test Report | Manual in Word — 2–3 days | Auto-generated at dispatch |
| Customer complaint response | Cannot trace root cause | Full root cause in seconds |
How FoundryX ERP Implements Heat Tracking
FoundryX by Quantbit Technologies is a purpose-built foundry ERP on the open-source ERPNext framework, designed for Indian grey iron, SG iron, and alloy steel foundries. Its heat management module was built around real implementation experience in the Kolhapur, Pune, Rajkot, and Coimbatore foundry clusters.
What FoundryX Records for Every Heat
- Charge composition — pig iron grades, scrap types, ferro-alloys, returns with exact weights
- Expected chemistry — auto-calculated from charge; deviation alert before pouring
- Furnace parameters — type (induction/cupola), tapping temperature, hold time, power consumed
- Ladle chemistry — spectrometer analysis results imported or entered against heat
- Inoculation treatment — inoculant type, weight, and treatment time
- Pour record — pour temperature, start/end time, moulds filled
- Castings produced — item-wise count and weight, barcode/tag printing option
- Rejection against heat — defect code, cavity, operator, shift — feeds Pareto daily
- Dispatch linkage — every dispatch lot linked to source heat; MTR auto-generated
FoundryX clients across the Kolhapur automotive casting cluster report 35–40% reduction in casting rejection rates in the first quarter after go-live — a direct result of heat-level rejection analysis making the top 3 root causes visible in the first week of operation. For a foundry producing 500 tonnes per month at ₹48,000 per tonne metal cost with 8% rejection, a 35% improvement on that rejection rate represents approximately ₹32 lakhs in annual metal cost savings.
FoundryX heat tracking integrates with AlsensePro — Quantbit's AI vision quality inspection module — linking defect images captured by the AI camera at inspection directly to the source heat record. This creates a visual traceability record that goes beyond what any paper system or generic ERP can provide.
See Heat Tracking in Action — Live FoundryX Demo
Heat tracking, rejection analysis, pattern management, AI quality inspection — all in one ERPNext platform.
Serving Kolhapur, Pune, Rajkot, Coimbatore, Belgaum & all major Indian foundry clusters.