Drawing Specifications 1.0
Description:
Drawing Specifications 1.0 supports the Designer in the writing of the drawing specifications for heat, thermochemical, mechanical and surface treatments performed mainly on special structural steels. The adopted definitions are consistent with EN 10052 : 1995 Vocabulary of heat treatments terms for ferrous products.
1. Primary rules:
- Rule 1.1: The specifications for drawing treatment have to be clear and coherent. It is better to go beyond in the demanded description rather than leave a possibility of interpretation at the performer of the treatment.
- Rule 1.2: If there are possibilities of misunderstanding it has to be always indicated the zone where it is demanded a defined characteristic, covering the tolerances and the measurement method.
- Rule 1.3: Every demanded characteristic has to be obtained during treatment and checked during control.
- Rule 1.4: The drawing specifications have to be intended to the final product.
2. Secondary rules:
- Rule 2.1: In the cartouche it has to be indicated the material, in terms of quality and dimensions with references to the specific product standards and the starting heat treatment condition.
- Rule 2.2: In the drawing field it has to be indicated the succession of the heat, thermochemical, mechanical and surface treatments in chronogical order from up to down.
- Rule 2.3: It has to be clearly indicated the zone that has to be protected during the treatment (anticarburizing, antinitriding etc. protections).
- Rule 2.4: It has to be indicated the types of atmosphere usable during the treatment, for the heating, the maintenance, and the cooling, if they are fundamental for obtaining some surface characteristics.
Use:
- Choose from the list the treatment you want to know the modes of drawing specification
- Fill in the empty fields taking attention to the notes
- Copy & paste the complete specification in the drawing field respecting the chronological order of execution of the treatments from up to down
MASSIVE HEAT TREATMENTS
CONVENTIONAL PRELIMINAR MASSIVE HEAT TREATMENTS
ANNEALINGS
Soft annealing Full annealing Spheroidal annealing Sub-critical spheroidal annealing Pendular spheroidal annealing Stress relief annealing
NORMALIZING Normalizing Normalizing and tempering Workability quench and tempering
PRELIMINAR ISOTHERMAL MASSIVE HEAT TREATMENTS Isothermal annealing Spheroidal isothermal annealing
CONVENTIONAL FINAL MASSIVE HEAT TREATMENTS Hardening and stress relief tempering Hardening and tempering Martempering and stress relief tempering Stress relief tempering Tempering Quench and tempering
FINAL ISOTHERMAL MASSIVE HEAT TREATMENTS Isothermal hardening or Bainitic hardening or Austempering or Isothermal quench and tempering
SELECTIVE HEAT TREATMENTS
SURFACE HARDENING Induction surface hardening and stress relief tempering Surface laser hardening ans stress relief tempering Flaming surface hardening and stress relief tempering EBM surface hardening and stress relief tempering
THERMOCHEMICAL TREATMENTS
CARBURIZING Carburizing, direct hardening and stress relief tempering Carburizing, indirect hardening and stress relief tempering Carburizing, double hardening and stress relief tempering Carburizing, hardening after isothermal maintenance and stress relief tempering
CARBONITRIDING Carbonitriding, direct hardening and stress relief tempering Nitriding
NITROCARBURIZING Ferritic nitrocarburizing Ferritic nitrocarburizing + oxidation Ferritic sulphidizing Ferritic sulphidizing + oxidation
MECHANICAL TREATMENTS Shot peening
SURFACE TREATMENTS
PHOSPHATION Zinc phosphation Manganese phosphation