The JIT Strategy in Frame Production

• Guide
• CHY Engineering Team

In massive-tonnage manufacturing (especially white goods bodies, steel construction profiles, or heavy machine carcasses), the factor that actually brings in the money is not just the quality of the product coming out of the machine, but the cost of idle stocks left to rust in the factory's backyard. Inspired by the Toyota model, the "Just In Time" (JIT) production methodology has made traditional bulk purchases of hot rolled steel or secondary grade steel obsolete.

Coil Holding Costs and Cut-to-Length Optimization

The first hidden cost a factory attempting to process sheet metal in-house must bear is storage space. These coils, weighing tons and lying as dead capital until they enter the cut-to-length line, simultaneously slow down cash flow. When a strategic sourcing agreement is made with an advanced steel service center, the manufacturer does not purchase raw coils; they receive materials cut to the exact millimeter dimensions of their machine's conveyor belts, limited precisely to that day's production quota. This situation zeroes out the factory's sheet metal processing line, operator salaries, and scrap transport costs in a single stroke.

Preventing Scrap Waste

When a manufacturer buys standard-sized plates and cuts them according to carcass bends in their own facility, they generate an average of 12-18% scrap. However, when custom strips slit precisely to the bending width (e.g., 142.5 mm wide) are taken from a precision coil slitting machine, the scrap leaving the machine is 0%. Engineering algorithms (Nesting) running in the background at expert firms like CHY Steel extract maximum efficiency from the master coil, minimizing scrap, and directly reflecting this profit margin back to the customer. In large-scale manufacturing, the secret to profitability is not buying the cheapest steel, but buying it dimensioned with the lowest possible scrap and "just in time."