Marker Efficiency (Cutting)
Compute the efficiency of a pattern marker in cutting, E = (pieces area / marker area) · 100%, the fraction of the lay actually used by the patterns. The rest is the 'waste' between pieces, an unrecoverable fabric loss — the largest variable cost in garment making. Each percentage point of utilization saves a lot of fabric in scale production. Enter the pieces area and the total marker area.
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Rendimento de encaixe (corte)
Antes de cortar, os moldes das peças são arranjados sobre a tela como num quebra-cabeça — o encaixe (marker). O rendimento R = (área das peças/área do encaixe)·100% mede quanto da tela vira roupa; o resto é o refugo entre as peças, tecido perdido para sempre. Na confecção em escala, esse é o maior custo variável: numa fábrica que corta milhares de metros por dia, ganhar 2% de aproveitamento economiza uma fortuna em tecido. Por isso usam-se softwares de encaixe automático e empilham-se dezenas de folhas para cortar de uma vez. Bons encaixes passam de 85%; abaixo de 80%, há dinheiro indo para o lixo. Informe a área das peças e a área total do encaixe.
Related Tools
Casting Metal Yield
Calculate the metal yield of a casting process, η = (part mass ÷ total poured mass) × 100%, dividing the finished part mass by the total poured metal (part + risers + runners + spills). The result, in %, measures the metal utilization efficiency: the rest (runners, risers, flash) is remelted, but consumes energy and adds cost. Typical yields range from 50 to 80%, depending on the part and gating complexity. Maximizing yield (well-sized risers, optimized gating) cuts energy and remelting costs. Enter the part mass and the total poured mass.
Elevator Motor Power
Calculate the motor power of an elevator, P = m·g·v ÷ η, from the payload m (kg), gravity g (9.81 m/s²), nominal speed v (m/s) and the system efficiency η (motor, gearbox, sheaves). The result, in watts, is the mechanical power needed to hoist the load at nominal speed. In practice, the counterweight (balancing the car plus ~45% of the load) reduces the effective power, and regenerative braking on descent can return some to the system. It is the base calculation for sizing the traction machine. Enter the load, the speed and the efficiency.
Cotton Yield in Arrobas per Hectare
Estimates cotton yield in arrobas per hectare from base productivity and management factor.
The results provided by this tool are for general informational and educational purposes only and do not constitute professional, financial, medical, legal, tax or accounting advice. Always confirm important decisions with a qualified professional and official sources.