Calculating Cost
10 11
complexity factor of 45 or higher.—Connor Marrying Additive to Production
12 13
allows lifting with straps by crane. Handholds reduce mold weight, allowing easier removal and allow for easier placement.—Shah
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Remember that when prototyp- ing for production, there is more freedom in additive manufacturing than in standard production tech- niques.—Weiss.
The design process must account for additive manufacturing all the way from concept to pouring, including the removal and handling of cores and molds. Cores greater than 80 lbs. require attachment points for crane removal. Dual purpose all thread slot
ਗ਼ॠ成本
Factor reasonable risk into the price.— Weiss
Hybrid approaches can be utilized for time and/or cost savings. Tis means conventional patterns used with 3-D printed cores. For 1,000 parts or higher, hybrid is
more cost effective than 3-D sand print- ing for parts with a complexity factor of
56 or higher.—Brett Connor, Youngstown State University
When patternmaking requires expen- sive tooling, 3-D sand printing is advantageous for low quantity produc- tion of molds and cores, even for low complexity parts. Te cost advantage depends on sand printing production costs.—Connor
For some highly complex parts, 3-D sand printing may be cost effective even if tooling exists already or part quanti- ties are high, especially in situations where cores can be consolidated. With 20% fabrication cost reduction, sand printing is effective for parts with a
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10 11
造成本Օ降Ѻ 。ȍ)UTTUX Зу生Ӱ՟গ术技造ӱ材增ذ
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模Ӏङ重量，ђ৲更容易Ծ除չ放置。ȍ9NGN
14 15
需要牢ઓङ是，当Խ型生ф时， 增材Ӳ造技术比标ӕ生ф技术有 YYOK=ȍ。ंਘङך更
ਯ砂չ型模ङص较量数ф生֨ ，时ў铸ङ杂זןЉ是ਙ甚，时 印۸* ंйӲ模工ਫ比较ો时， 技术ѩ势明显。成本ѩ势ՈӐй XUTTU)ȍ。本成ф生ङ印۸型砂
҅即，ф生ў铸ङ杂זچ高йث ，ך较量数ङ要需或Ӏ模有已 ӑەङ并合љՕਯ砂֨是Ӱ特 本成Ӏ更ਈՕ印۸型砂* Ј， 或更 О数系杂זङў铸。ञ效 Ӳ，效高更印۸型砂* 高时，
。格џҵઋপ֜险风理合ر ȍ=KOYY
Օљӯ用混合工ਫਭ约时间չ成 ۸* 本。这意նव把Ѯ统模式Њ ф生，ײ҆。合ৈबਯ砂印 О数系چ杂ז֨，ў铸Їљ或ў ਫ工合混，Јӑەङ高更Ճ ȍ。高更ञ效本成ङ印۸* 比
ђ概念ӱ浇注、包括砂ਯչ砂型 都И३Ҷઋગ֨，理הչԳ拆ङ 必须ৰਖ਼增材Ӳ造工ਫङ应用。 磅ङ砂ਯ需要О起重 йם量重 չ٫装բ用机重起。点բ配וગ Ѻ降٫装բ过通。槽়螺Ҷ用Д
March 2017
FOUNDRY-PLANET.COM | MODERN CASTING | CHINA FOUNDRY ASSOCIATION | 43
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