ISO 27547-1-2010 塑料.使用无模工艺的热塑材料试样的制备.第1部分:一般原则和试样的激光烧结
Plastics - Preparation of test specimens of thermoplastic materials using mouldless technologies - Part 1: General principles, and laser sintering of test specimens
This part of ISO 27547 specifies the general principles of test-specimen preparation using mouldless
techniques. Sometimes, these techniques are called “tool-less” methods. Common to all these techniques is
the fact that the specimens are produced layer by layer. The shape and dimensions of the specimens are
defined in terms of a numerical description using CAD techniques. This computer model of the specimen is
“sliced” into layers by means of suitable software. The specimen-preparation process then builds up the
specimens automatically, layer by layer, using the computer model and a suitable computer-controlled lasersintering
machine. The three software systems used (for CAD, slicing the specimen into layers and machine
control) may be independent systems interfacing separately with the machine or they may be integrated with
the machine.
This part of ISO 27547 also specifies the general principles to be followed when test specimens of
thermoplastic materials are prepared by laser sintering. The laser-sintering process is used to prepare
specimens layer-wise by sintering the particles of a thermoplastic powder using the energy of a laser beam.
This part of ISO 27547 provides a basis for establishing reproducible sintering conditions. Its purpose is to
promote uniformity in describing the main parameters of the sintering process and also to establish uniform
practice in reporting sintering conditions.
The particular conditions required for reproducible preparation of test specimens which will give comparable
results will vary for each material used. These conditions shall be as given in the International Standard for the
relevant material or shall be agreed upon between the interested parties.