How can i determine time between welding current(weld2) and temper current (weld3) as most effective temper for RSW?

08 June 2016 1 10K Report

cooling time between w2 and w3 that is usually explained by cycle time is important to martensitic formation was complated. for this reason, any conclusion by cooling rate in RSW and uses TTT and CTT diagram could be recommended. however, my experimental result in various level of cooling time is differ by theoretical computing.

Nick den Uijl

Determine the martensite formation temperature.
Allow for sufficent cooling for martensiet to form (e.g. M90%)
Determine a heating cycle to heat up the material that has transformed to sufficiently high temperatures to enable tempering, but don't exceed the austenite transformation temperatuur. For this simulation software (e.g. Sorpas) is very well suited.

I have described this procedure in several papers and presentations, see for instance:

Resistance Spot Welding of Advanced High Strength Steels for the Automotive Industry
Using Sorpas to support weldability research at Corus
Resistance Spot Welding of Advanced High Strength Steels

It worked well in practice.

Badges
Science topic

More Moein Tamizi's questions See All

For connection between the bolt to the steel element, which kind of interaction should be considered on ABAQUS?

This design is to check for rupture in the steel element and the behavior of the bolt does not matter.

14 August 2020 6,580 2 View

Tips on how to implement organic computing?

I'm researching the Self - Adaptive System of hospital systems.But I've had trouble figuring out how to do organic computing for self-adaptation in hospital systems.I am looking for an article or...

14 April 2020 1,743 3 View

If a single, new natural variety of plant is discovered, should I put up a journal describing the plant or just register it under PVP?

The new variety is being of natural hybrid origin and it has ornamental values. It has not been described or discovered before as far as I have concerned.

04 February 2020 4,421 7 View

How could electrodeposited nanowires in polycarbonate membrane be released with preventing the metal layer impurity?

I am synthesizing ZnO nanowires using electrodeposition in polycarbonate membrane. Therefore, it is inevitable to deposite a metal layer (Au,Ag , etc. ) on one side of the membrane to make a...

25 November 2019 9,112 1 View

Which is the best program can be used for analyzing hemispherical photos for calculating Leaf Area Index, Canopy Cover, and Wood Area Index?

Gap Light Analyzer (GLA)? Can-Eye? HEMIv? etc.

06 October 2017 952 20 View

What is the role of texture on different physical and mechanical properties of nylon?

19 January 2017 6,211 5 View

Any one knows how to compact UHMWPE (unswelled) ppowder by hot press?

01 June 2016 6,805 2 View

How can I eliminate the spin contamination in unrestricted states?

I am optimizing some structures at the doublet potential energy surface. I know that the eigenvalue of operator S2 should be near to 0.75 on the doublet potential energy surface...

06 November 2015 2,334 6 View

How does one prevent substrate's element from entering thin film during heat treatment?

Hi! I deposited TiO2 thin film for photocatalyst applications using solgel-dip coating technique on microscope slide glass(which I believed mixture element of borosilicat materials and it can...

24 August 2014 4,184 13 View

Can anyone help with PCR troubleshooting?

I have real problem working with PCR. For example, one day my positive control has a band after gel doc but in next day this same control hasn't any bond and the other bands are very faint. I am...

17 June 2014 947 11 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

12% ledeburitic cold work tool steel, etched for revealing retained austenite, any help for clarifying?

Hello everyone. Given microstructure image belongs to a 12% ledeburitic cold work tool steel (annealed and tempered). The sample was etched with picral (100 mL ethanol and 4 g picric acid). I...

02 March 2021 4,119 3 View