Definition Annealing Process definition and Its Contribution

pmwong

Involved - Posts
#1
Has anyone have a proper definition of annealing process and its contribution.

most of them define as reducing the stress, well I think that's much more behind this definition, even the book or the websites that I have visited did not say much about this definition.

Hope you could help
 
Elsmar Forum Sponsor
C

cokyat

#2
Based on Kalpakjian's Manufacturing Engineering and Technology, Annealing is a general term used to describe the restoration of a cold-worked or heat-treated metal or alloy to its original properties, such as to increase ductility(hence formability) and reduce hardness and strength, or to modify the microstructure. Annealing is also used to relieve residual stress in a manufacturing part for improved machinability and dimensional stability. The term also applies to the treatment of glasses and similar products, castings, and weldments.:agree1: :magic:
 
Last edited by a moderator:

pmwong

Involved - Posts
#3
Annealing Process

Thanks cokyat, for the informations

Would like to know the annealing process for plastic, the books doesn't say much
 
S

saisai

#6
For the annealing treatment to metal part, why this treatment can make metal component soften?

As somebody told me but i forgot it, soften is just one of the minor issue. Anybody know the main purpose?
 
S

saisai

#7
Furthermore, why those copper component have annealing treatment will have deeper yellow color than before?
 

TPMB4

Quite Involved in Discussions
#8
Oh man you are taking me back a decade plus now to my masters in materials engineering.

IIRC any work you do on metals introduces faults in the microstructure such as cracks, dislocations, etc. The more work done the more of these faults there are. These interact in ways which make the metal harder, think of it like the defects are interacting together preventing the previously ductile metal from kind of flowing (very simplified explanation due to the fact I have not used that information for over 10 years). The work can be from extruding, forming or anything that exerts a force on the metal I think.

Then annealing is where you heat the metal up to a temperature below its melting or softening temperature. This temperature is high enough for the defects to effectively move and disappear (IIRC) which allows the metal to be more ductile and effectively softer.

I believe that other types of materials would operate similarly. Anything crystalline (especially larger crystals) too can have these defects and the same hardening/softening interaction with working or annealing.

I hope my rather pathetic attempt at remembering a rather basic part of education helps. If you want to know more then I can recommend W. D. Callister's book on materials science is a good general book aimed at undergraduates but easy to follow. Perhaps not the best book on the subject but it covers pretty much most types of materials and materials topics in a straightforward way. Also used to be cheap hence the undergraduate target audience. If it was aimed at professional materials audience it would probably be about 5+ times more expensive!!!!
 

TPMB4

Quite Involved in Discussions
#9
Don't know about the copper annealing coming out a colour. It could be a possibility that there is something in the atmosphere of the annealing oven but that is rather spurious guesswork on my part. I have really only studied steels and aluminium annealing (plus a few other materials but not copper).
 
Thread starter Similar threads Forum Replies Date
B Application of CQI-9 Heat Treat Survey for an Annealing Process - Steel Coils Various Other Specifications, Standards, and related Requirements 8
kedarg6500 Should soft annealing of Copper be done using regular air or in an inert atmosphere ? Manufacturing and Related Processes 2
E Surface Inspection solutions for Hot mills, Pickling lines, annealing lines Inspection, Prints (Drawings), Testing, Sampling and Related Topics 2
J Need Help with FPY Data in Assembly Process Manufacturing and Related Processes 7
A When someone refuses to follow a process.... Misc. Quality Assurance and Business Systems Related Topics 21
E Software maintenance Process Software maintenance Process to IEC 6204? IEC 62304 - Medical Device Software Life Cycle Processes 3
R AS5553 Clause 3.1.7 f - "Implement a returns process....." AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 5
normhowe "The Problem with Quality Management: Process orientation, controllability and zero-defect processes as modern myths" Book, Video, Blog and Web Site Reviews and Recommendations 2
Judy Abbott General temperature used in the blasting process and laser process Manufacturing and Related Processes 2
B SOP for CNC turret punching machine for sheet metal process Manufacturing and Related Processes 0
A API Monogram audit review process Oil and Gas Industry Standards and Regulations 4
R AS9102 FAI Change in Material / Process Supplier AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 4
A Process mapping Process Maps, Process Mapping and Turtle Diagrams 1
R MDEL Process Canada Medical Device Regulations 4
optomist1 Rates Daily or Hourly Process Improvement Training Consultants and Consulting 2
S Manufacturing Process FDA FOIA Medical Device and FDA Regulations and Standards News 3
S Manufacturing Process FDA FOIA US Food and Drug Administration (FDA) 4
B Toyota PPAP Process - Three Questions APQP and PPAP 3
R Changes vs CMO - How can we simplify this process? Supplier Quality Assurance and other Supplier Issues 3
A Ethics Committee Review Process for IVD Products EU Medical Device Regulations 2
V Laser Welding Process - Impact on Electrical Properties Reliability Analysis - Predictions, Testing and Standards 4
Q Process: Knowledge Section 7.1.6 of ISO 9001:2015 ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 10
L Documented Information in Internal Audits Process (9.2) ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 4
A Sampling plan for in-process QC (medical devices) Inspection, Prints (Drawings), Testing, Sampling and Related Topics 13
R MRB (Material Review Board) Process using MS Sharepoint or MS Teams Manufacturing and Related Processes 2
M Clinical Benefit of device that only aids in a process for managing or treating disease EU Medical Device Regulations 2
C In-process inspection - Tooling and assembly lines for automotive companies AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 6
M Efficacy of an IT process after a cyber attack ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 2
N Sterilization Protocol Change in Validation Process and further impacts ISO 13485:2016 - Medical Device Quality Management Systems 1
N Riveting - special process Manufacturing and Related Processes 11
M Material incoming to the production process reflected in PFMEA FMEA and Control Plans 9
A API Spec Q1 Purchasing Process - Supplier Reevaluation based on Supplier Risks 5.6.1.4 Oil and Gas Industry Standards and Regulations 17
B Handling lower detection limits for SPC and process performance Statistical Analysis Tools, Techniques and SPC 1
D Measurables for Plastic Injection molding process Manufacturing and Related Processes 1
S Cleaning process center change ISO 13485:2016 - Medical Device Quality Management Systems 4
Z Rapid audit template for plastic parts manufacturing process Manufacturing and Related Processes 12
R Inspection and Work order process Inspection, Prints (Drawings), Testing, Sampling and Related Topics 9
T ISO 13485:2016 Clauses related to process matrix ISO 13485:2016 - Medical Device Quality Management Systems 3
A How to reduce the process SPC monitoring Capability, Accuracy and Stability - Processes, Machines, etc. 3
John Predmore Configuration Management as a process instead of a procedure AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 10
R PCBA process validation Qualification and Validation (including 21 CFR Part 11) 2
U Internal Auditor not trained but done Audit for some process Nonconformance and Corrective Action 5
B Two excellent examples of process capability analysis from Quality Magazine Capability, Accuracy and Stability - Processes, Machines, etc. 5
D ECO (Engineering Change Order) process questions ISO 13485:2016 - Medical Device Quality Management Systems 7
S Sterilization validation after changing sterilization process provider Qualification and Validation (including 21 CFR Part 11) 3
Pau Calvo Quality Management process is mandatory in ISO9001? ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 10
Tagin Template or Checklist for Process Change Document Control Systems, Procedures, Forms and Templates 5
LostLouie Manufacturer divorced from Design process, is he justified in design process deficiencies? ISO 13485:2016 - Medical Device Quality Management Systems 9
J 1.11 Preliminary Identification of Special Product and Process Characteristics APQP and PPAP 4
D Question regarding customer feedback process ISO 13485:2016 - Medical Device Quality Management Systems 3

Similar threads

Top Bottom