Polypropylene Re: Materials for LM

From: Brock Hinzmann (bhinzmann@sric.sri.com)
Date: Tue Jul 20 1999 - 00:16:13 EEST

Does anyone offer polypropylene?

Brock Hinzmann
SRI International
Menlo Park, California
voice: +1 (650) 859-4350
email: bhinzmann@sric.sri.com

Christian_Nelson/DTM wrote:
>DTM Corporation offers a number of materials for use in the Sinterstation
>System using the Selective Laser Sintering (SLS) process. This process uses
>heat from a laser to selectively fuse powders together thus forming objects
>layer by layer. Over the past seven years, DTM has introduced 15 materials
>used for a number of applications including functional prototypes,
>investment casting patterns, sand cores and molds, and injection molding
>Listed below are the most recently introduced materials. There is
>additional information available on the DTM web site
>? PA
>Material: Engineering Plastic
>The Solution: Tough, durable plastic prototypes and parts
>The Benefits:
> Good heat and chemical resistance
> Excellent surface finish
> Fine feature detail
> Long-term stability
> USP level VI certification
>DuraForm? GF
>Material: Glass-filled engineering plastic
>The Solution: Strong, rigid plastic prototypes and parts
>The Benefits:
> Increased modulus and heat resistance
>® 201
>Material: Thermoplastic elastomer
>The Solution: Flexible, ?rubber-like? prototypes and parts
>The Benefits:
> High elongation
> Excellent abrasion resistance
> Long term stability
> Impermeable to water
>Copper Polyamide
>Material: Copper-filled engineering plastic
>The Solution: Quick turnaround, prototype mold inserts
>The Benefits:
> Fast build time
> Easy to finish
> Good thermal conductivity
> Mold parts with normal cycle times
>RapidSteel® 2.0
>Material: Stainless steel/bronze
>The Solution: Durable metal mold inserts
>The Benefits:
> P20 steel hardness and durability
> Excellent wear resistance
> Material can be finished by machining or EDM and can be plated, textured
> or welded
> Conformal cooling channels can be constructed
>CastForm? PS
>Material: Polystyrene
>The Solution: ?Foundry friendly? investment casting patterns
>The Benefits:
> Compatibility with standard wax removal processes
> Low ash content
> Wide foundry acceptance
> All metals can be cast: Ti, Al, Mg, Zn
>SandForm? Zr & SandForm? Si
>Material: Zircon and Silica Sands
>The Solution: Foundry sand cores and molds
>The Benefits:
> Material is traditional phenol-based shell sand formulation
> Complex, single-piece cores and molds with integral cores can be built
>"Amba Datt Bhatt" <adatt@mailcity.com> on 07/01/99 01:11:08 PM
>To: rp-ml@bart.lpt.fi
>cc: (bcc: Christian Nelson/DTM)
>Subject: Materials for LM
>Note: Some recipients have been dropped due to syntax errors.
>Please refer to the "$AdditionalHeaders" item for the complete headers.
>I want to know the capability of LM (Layered Manufacturing)
>Machines to handle different materials. In all how many
>materials are there,? How many materials one particular M/c
>can handle?
>Thanks in anticipation.

For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/

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