---
title: "木制品生产成品率：从原木到成品"
description: "如何把锯切、干燥、机加工和涂装各道工序的成品率串成一个综合出材率，并把它换算成原木采购量。"
image: "https://nestingcalc.com/og-default.png"
url: "https://nestingcalc.com/cn/guides/manufacturing-yield-woodworking/"
locale: "zh-Hans"
---

# 木制品生产成品率：从原木到成品

如何把锯切、干燥、机加工和涂装各道工序的成品率串成一个综合出材率，并把它换算成原木采购量。

## 为什么 55% 的出材率不等于 55% 的生意

每家木制品厂都在谈出材率，但几乎没有人在制材车间出口处卖货。真正出厂的量是各道工序成品率相乘的结果：原木变成锯材，锯材变成干燥毛料，毛料变成机加工部件，部件再经过涂装和包装存活下来。在 [生产成品率](https://nestingcalc.com/cn/manufacturing-yield-calculator/) 中填入现实的工序数据——锯切 55%、干燥 70%、机加工 85%、涂装 95%——综合成品率就是 31.09%。每出厂一立方米成品，你要买进 3.22 m³ 原木。

## 第一道工序：原木开料

把原木锯成方边锯材是损失最惨重的一步。板皮、裁边条、锯末加上原木尖削度，合起来要拿掉 40–60%：FAO 给出的全球平均出材率约为 50%，欧盟软木制材厂能做到 48% 以上，东南亚小型带锯厂约 52%，而链锯制材掉到 39% 左右。薄锯缝与双锯片设备、正确的原木分选以及量化的超切余量管控，正是把这些百分点找回来的地方。详细的出材率基准见 [锯材出材率：基准值与提升方法](https://nestingcalc.com/cn/guides/sawmill-recovery-rate/)。

## 第二道工序：干燥

干燥本身很少直接损失材积——从生材干到含水率 12%，收缩只有个位数百分比——但它会损失板材：端裂、开裂、变形和内部塌陷会让材料降等或报废。管理良好的一炉料，按树种和厚度计划 5–15% 的降等；难干的硬木代价高于云杉。[生产成品率](https://nestingcalc.com/cn/manufacturing-yield-calculator/) 里的干燥工序成品率应当反映降等，而不只是收缩，而 [干燥窑容量](https://nestingcalc.com/cn/kiln-capacity-calculator/) 能帮你把炉料装载量算准，从而把降等控制在低位。

## 第三、第四道工序：机加工与涂装

机加工到最终尺寸的成品率通常为 70–90%：截头料、榫头与开槽废料，而刨削余量已经在毛料尺寸阶段扣除。涂装和组装要温和一些，为 90–97%，但最后一步的颜色报废损失最大，因为前面每一道工序的利润都埋在里面。要把各道工序分开跟踪——[生产成品率](https://nestingcalc.com/cn/manufacturing-yield-calculator/) 提供损失明细表，就是为了让你先堵最大的漏，而不是最显眼的漏。

## 把成品率换算成采购算式

成品率链条最实用的输出就是采购量。用交货材积除以综合成品率：一张 12 m³ 成品部件的订单，在 31% 的综合成品率下需要约 38.6 m³ 原木。把同样的数字连同你的原木单价输入 [BOM 成本](https://nestingcalc.com/cn/bom-calculator/)，就得到决定这张订单值不值得接的材料成本。

[生产成品率](https://nestingcalc.com/cn/manufacturing-yield-calculator/) [打开线性切割计算器](https://nestingcalc.com/cn/linear-cutting-calculator/)

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