Re: [MW:34521] I request for your expert advice

Is it an option to only use a spot GTAW weld for fixture of the thread

Or seal it with Loctite

To prevent shrinkage during welding, very low heat input process like laser welding can be an option

Regards,

Weld-Tech BV

Jurgen Prinsen (MSc/IWE)

---

Van: "Balasubramanian M" <bala.smi@gmail.com>
Aan: "materials-welding" <materials-welding@googlegroups.com>
Cc: "Balasubramanian M" <bala.smi@gmail.com>
Verzonden: Donderdag 31 augustus 2023 09:36:43
Onderwerp: [MW:34520] I request for your expert advice

Dear Experts,

I am writing this for you to give me some advice/suggestions.

We are facing a severe issue in welding the Body-end connector joint in our small-size (0.75" 800#) 2-piece Ball Valves Lever Operated SW ends (MOC 316 with PTFE seat ring). Since our client wants us to seal weld the Body-End connector joint, after assembly and final testing prior to despatch.

We find that after welding, in TIG, the valve becomes very difficult to operate.

I request the experts in this group to suggest a suitable method to weld the joint.

Best Regards.

M.Balasubramanian

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Re: [MW:34510] ALUMINIUM 6082 -T6

Hi,
The attached file might be useful to you.

Thanks& Regards,

(Karthik)
Karthikeyan.S
M: +66-892512282






On Wednesday, August 23, 2023 at 01:23:04 PM GMT+7, Kannayeram Gnanapandithan <kgpandithan@gmail.com> wrote:





u might used 5356 or 5556, 
THANKS & BEST REGARDS,
KG.PANDITHAN, BE, IWE,  CSWIP 3.1,
ISO 9712 Level 2 in VT,
ASNT-Level II in PT,MT,RT & UT,
LA ISO 9001-2015,
International Welding Engineer. 
CONSULTANT-WELDING & QUALITY
Mobile no: +919940739349


On Tue, Aug 22, 2023 at 9:30 AM Vishwas Keskar Welding Manager WELDING <vvkeskar123@gmail.com> wrote:
> Dear Experts 
>
> ALUMINIUM 6082 -T6 - 32mm , 20 mm , 16 mm plates 
> 32mm ,-32mm- Butt joint
>  20 mm-20 mm-Butt joint
> 16 mm - 16 mm -Butt joint
> Above plates are jointed through butt joints  .
> Welding Process - GMAW 
> Gas - Argon 
> Filler wire  - ER4043
>
> Due to job part length , there is distortion at the vicinity of butt welds. So Cold straightening operation was carried out on Press. The weld/HAZ cracking is observed  immediately the press load is commenced
>
> Pl. suggest suitable action for Welding/cold straightening 
>
> Thanks 
>
> Vishwas - IWE
>
>
>
>
>
>
>
> --
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Re: [MW:34509] ALUMINIUM 6082 -T6

u might used 5356 or 5556, 

THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE,  CSWIP 3.1,

ISO 9712 Level 2 in VT,

ASNT-Level II in PT,MT,RT & UT,

LA ISO 9001-2015,

International Welding Engineer. 

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

On Tue, Aug 22, 2023 at 9:30 AM Vishwas Keskar Welding Manager WELDING <vvkeskar123@gmail.com> wrote:

Dear Experts 

ALUMINIUM 6082 -T6 - 32mm , 20 mm , 16 mm plates 

32mm ,-32mm- Butt joint

 20 mm-20 mm-Butt joint

16 mm - 16 mm -Butt joint

Above plates are jointed through butt joints  .

Welding Process - GMAW 

Gas - Argon 

Filler wire  - ER4043

Due to job part length , there is distortion at the vicinity of butt welds. So Cold straightening operation was carried out on Press. The weld/HAZ cracking is observed  immediately the press load is commenced

Pl. suggest suitable action for Welding/cold straightening 

Thanks 

Vishwas - IWE

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Re: [MW:34508] ALUMINIUM 6082 -T6

 Aluminium Alloy 6082 has very good weldability, but strength is lowered in the weld zone. When welded to itself, alloy 4043 wire is

 recommended. If welding Aluminium alloy 6082 to 7005, alloy 5356 is used. 

You have not mentioned the parameters selected, tests conducted after welding, or approval standards followed (AWS D 1.2 / 

ISO 15614-2 etc.). Whether NDT (Radiography and visual) or DT (mechanical tests) were carried out before distortion correction.

Pores may create under-bead cracks and potential causes include:

• Presence of molecular hydrogen.
• hard microstructure.
• High weld residual stresses.
• Fast cooling rate.
• Not applying preheat or insufficient preheating for welding.

      ·   Welding without cleaning moisture, etc.      

    

During the welding of the Aluminium alloy, hydrogen can cause pores, because its solubility in liquid Aluminium is much higher than 

that in solid Aluminium. Hydrogen is restrained in the molten pool with the advance of the solid-liquid interface. This could be avoided by 

pre-heating the job (due to its high thickness) and causing slow cooling.

Under the stress of external loading, a large number of hydrogen atoms may gather at the grain boundary resulting in stress concentration 

resulting in crack initiation; Under the action of external or tensile stress and a larger stress intensity factor, the pores, generated by 

hydrogen atom absorption initiates cracks and shows different propagation modes.

Further, due to the higher coefficient of thermal expansion apart from joint pre-heating, avoid continuous welding. Follow sequence welding 

(placing welded metal at different points and joining them together) method, back-step method (to avoid heat concentration), job pre-setting 

(before tack welding) by 5 to 7 deg. etc. to control the distortion.

C Sridhar.

 

·           

 

 

On Tue, 22 Aug 2023 at 09:30, Vishwas Keskar Welding Manager WELDING <vvkeskar123@gmail.com> wrote:

Dear Experts 

ALUMINIUM 6082 -T6 - 32mm , 20 mm , 16 mm plates 

32mm ,-32mm- Butt joint

 20 mm-20 mm-Butt joint

16 mm - 16 mm -Butt joint

Above plates are jointed through butt joints  .

Welding Process - GMAW 

Gas - Argon 

Filler wire  - ER4043

Due to job part length , there is distortion at the vicinity of butt welds. So Cold straightening operation was carried out on Press. The weld/HAZ cracking is observed  immediately the press load is commenced

Pl. suggest suitable action for Welding/cold straightening 

Thanks 

Vishwas - IWE

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[MW:34507] ALUMINIUM 6082 -T6

Dear Experts 

ALUMINIUM 6082 -T6 - 32mm , 20 mm , 16 mm plates 

32mm ,-32mm- Butt joint

 20 mm-20 mm-Butt joint

16 mm - 16 mm -Butt joint

Above plates are jointed through butt joints  .

Welding Process - GMAW 

Gas - Argon 

Filler wire  - ER4043

Due to job part length , there is distortion at the vicinity of butt welds. So Cold straightening operation was carried out on Press. The weld/HAZ cracking is observed  immediately the press load is commenced

Pl. suggest suitable action for Welding/cold straightening 

Thanks 

Vishwas - IWE

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Re: [MW:34505] Re: Super Duplex (32205) To Copper Nickle 90/10 (SMAW + GTAW)

Please check the below

1)What is type of joint - Single V Butt Joint (Base Metal-1 SA 106 Gr B, With Cuni 90/10 Lining, Base Metal - 2  SA 790 S32205 Super Duplex)

2)What is service - SeaWater

3)Operating temperature - 50Deg.

On Fri, Aug 18, 2023 at 5:07 PM Vishwas Keskar Welding Manager WELDING <vvkeskar123@gmail.com> wrote:

Pl. furnish below inf

1)What is type of joint 

2)What is service 

3)Operating temperature 

On Friday, August 18, 2023 at 3:30:10 PM UTC+5:30 Midhun murali wrote:

Dear Experts,

Can anyone tell me which Electrode and Filler wire should be used for Weld Between Super Duplex to Copper Nickles.

BR,

Midhun

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[MW:34503] Re: Super Duplex (32205) To Copper Nickle 90/10 (SMAW + GTAW)

Pl. furnish below inf

1)What is type of joint 

2)What is service 

3)Operating temperature 

On Friday, August 18, 2023 at 3:30:10 PM UTC+5:30 Midhun murali wrote:

Dear Experts,

Can anyone tell me which Electrode and Filler wire should be used for Weld Between Super Duplex to Copper Nickles.

BR,

Midhun

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Re: [MW:34503] Super Duplex (32205) To Copper Nickle 90/10 (SMAW + GTAW)

Butter Super Duplex side with ERNi-1\ENi-1 and complete the Joint using ENiCu-7.

Thanks & Regards

J.Gerald Jayakumar

On Friday, 18 August, 2023 at 03:30:01 pm IST, Midhun murali <muralimidhun15@gmail.com> wrote:

Dear Experts,

Can anyone tell me which Electrode and Filler wire should be used for Weld Between Super Duplex to Copper Nickles.

BR,

Midhun

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Re: [MW:34500] Re: ER70S-2 and ER70S-6 (GTAW Process)

Why generally ER &70S2 not recommended for GMAW even though classified in same Specification.

THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE,  CSWIP 3.1,

ISO 9712 Level 2 in VT,

ASNT-Level II in PT,MT,RT & UT,

LA ISO 9001-2015,

International Welding Engineer. 

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

On Fri, Aug 18, 2023 at 8:32 AM sridhar cn <sridharcn305@gmail.com> wrote:

ER70S-2 filler wire is mainly used for single-pass welding of killed, semi-killed, and rimmed steels. 

The addition of deoxidizer allows the filler metal to be used for welding steel with rust or dirt on the 

surface, which may damage the weld quality, depending on the surface conditions. It is widely used 

for high-quality and high-toughness GTAW welds and is well suited for single-side welding without 

the need for root gas protection on the reverse side of the joint. .

ER70S-6 filler wire is suitable for both single-pass and multi-pass welding. They are particularly suitable 

for sheet metal where smooth weld passes are expected and for sheet steel with moderate amounts 

of rust or hot rolled scale. These wires allow for higher current ranges when welding with a CO2 

shielded gas or a mixture of argon, carbon dioxide, and oxygen or argon and carbon dioxide. Typically, 

the base material used is the same as ER70S-2. Well suited for single-side welding without the need for 

root gas protection on the reverse side of the joint.

Further, with the addition of deoxidizers in ER 70S-2, the cost of the wire is three times higher than 

ER70S-6 filler wires.

Sridhar.

--------------------------------------------------------------------------------------------------------------------

On Thu, 17 Aug 2023 at 14:59, Kannayeram Gnanapandithan <kgpandithan@gmail.com> wrote:

generally 70S2 is not being used in GMAW eventhough it calls for both process, Any reasons?

On Wed, Aug 16, 2023, 4:36 PM sridhar cn <sridharcn305@gmail.com> wrote:

Due to triple deoxidizers present in the filler, the ER70S-2 wire is much more suited to weld on rusted surfaces 

compared to ER70S-6. Rust, which is an iron oxide, will react very fast with Ti, Zr, or Al to form their oxides, such 

as TiO₂ or ZrO₂ or Al₂O₃ thus the Mn will be saved. Mn provides strength and toughness to the weldment. So, 

any loss of Mn from the weld deposit will actually reduce the strength of the weld metal.

 

Loss of silicon will make the weld pool sluggish and can result in a poor weld bead appearance. There is no 

difference between ER 70S-6 and ER 70S-2 based on the mechanical properties, as both have 70ksi Tensile 

strength and 58 Ksi Yield strength. Both wires provide equal minimum specified tensile strength, yield strength, 

ductility, and toughness values.

  

ER 70S-6 is a solid TIG rod that is used for general-purpose welding. It can be used on MS, CS and LA  steels.

ER 70S-2 is available in 0.80 to 3.20 mm sizes, whereas ER 70S0-6 is available mostly in 0.80 to 2.00 mm sizes. 

Make a mock-up weld and see whether it meets X-ray qualified welds and check the mechanical properties prior 

to any further action.

 

C Sridhar.

  

On Wed, 16 Aug 2023 at 14:22, Vishwas Keskar Welding Manager WELDING <vvkeskar123@gmail.com> wrote:

You can write ER70S-6 with a note in WPS that :

Mn content shall not exceed 1.6 % 

Si content shall not exceed 1.0 % 

Thanks

VIshwas - IWE 

On Monday, June 3, 2019 at 7:48:39 PM UTC+5:30 K K wrote:

Dear All,

My PQR is qualified with ER70S-2.

Can I use ( Mention) ER70S-6 in WPS.

Regards

Kiran

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Re: [MW:34498] Re: ER70S-2 and ER70S-6 (GTAW Process)

ER70S-2 filler wire is mainly used for single-pass welding of killed, semi-killed, and rimmed steels. 

The addition of deoxidizer allows the filler metal to be used for welding steel with rust or dirt on the 

surface, which may damage the weld quality, depending on the surface conditions. It is widely used 

for high-quality and high-toughness GTAW welds and is well suited for single-side welding without 

the need for root gas protection on the reverse side of the joint. .

ER70S-6 filler wire is suitable for both single-pass and multi-pass welding. They are particularly suitable 

for sheet metal where smooth weld passes are expected and for sheet steel with moderate amounts 

of rust or hot rolled scale. These wires allow for higher current ranges when welding with a CO2 

shielded gas or a mixture of argon, carbon dioxide, and oxygen or argon and carbon dioxide. Typically, 

the base material used is the same as ER70S-2. Well suited for single-side welding without the need for 

root gas protection on the reverse side of the joint.

Further, with the addition of deoxidizers in ER 70S-2, the cost of the wire is three times higher than 

ER70S-6 filler wires.

Sridhar.

--------------------------------------------------------------------------------------------------------------------

On Thu, 17 Aug 2023 at 14:59, Kannayeram Gnanapandithan <kgpandithan@gmail.com> wrote:

generally 70S2 is not being used in GMAW eventhough it calls for both process, Any reasons?

On Wed, Aug 16, 2023, 4:36 PM sridhar cn <sridharcn305@gmail.com> wrote:

Due to triple deoxidizers present in the filler, the ER70S-2 wire is much more suited to weld on rusted surfaces 

compared to ER70S-6. Rust, which is an iron oxide, will react very fast with Ti, Zr, or Al to form their oxides, such 

as TiO₂ or ZrO₂ or Al₂O₃ thus the Mn will be saved. Mn provides strength and toughness to the weldment. So, 

any loss of Mn from the weld deposit will actually reduce the strength of the weld metal.

 

Loss of silicon will make the weld pool sluggish and can result in a poor weld bead appearance. There is no 

difference between ER 70S-6 and ER 70S-2 based on the mechanical properties, as both have 70ksi Tensile 

strength and 58 Ksi Yield strength. Both wires provide equal minimum specified tensile strength, yield strength, 

ductility, and toughness values.

  

ER 70S-6 is a solid TIG rod that is used for general-purpose welding. It can be used on MS, CS and LA  steels.

ER 70S-2 is available in 0.80 to 3.20 mm sizes, whereas ER 70S0-6 is available mostly in 0.80 to 2.00 mm sizes. 

Make a mock-up weld and see whether it meets X-ray qualified welds and check the mechanical properties prior 

to any further action.

 

C Sridhar.

  

On Wed, 16 Aug 2023 at 14:22, Vishwas Keskar Welding Manager WELDING <vvkeskar123@gmail.com> wrote:

You can write ER70S-6 with a note in WPS that :

Mn content shall not exceed 1.6 % 

Si content shall not exceed 1.0 % 

Thanks

VIshwas - IWE 

On Monday, June 3, 2019 at 7:48:39 PM UTC+5:30 K K wrote:

Dear All,

My PQR is qualified with ER70S-2.

Can I use ( Mention) ER70S-6 in WPS.

Regards

Kiran

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Re: [MW:34494] Re: ER70S-2 and ER70S-6 (GTAW Process)

generally 70S2 is not being used in GMAW eventhough it calls for both process, Any reasons?

On Wed, Aug 16, 2023, 4:36 PM sridhar cn <sridharcn305@gmail.com> wrote:

Due to triple deoxidizers present in the filler, the ER70S-2 wire is much more suited to weld on rusted surfaces 

compared to ER70S-6. Rust, which is an iron oxide, will react very fast with Ti, Zr, or Al to form their oxides, such 

as TiO₂ or ZrO₂ or Al₂O₃ thus the Mn will be saved. Mn provides strength and toughness to the weldment. So, 

any loss of Mn from the weld deposit will actually reduce the strength of the weld metal.

 

Loss of silicon will make the weld pool sluggish and can result in a poor weld bead appearance. There is no 

difference between ER 70S-6 and ER 70S-2 based on the mechanical properties, as both have 70ksi Tensile 

strength and 58 Ksi Yield strength. Both wires provide equal minimum specified tensile strength, yield strength, 

ductility, and toughness values.

  

ER 70S-6 is a solid TIG rod that is used for general-purpose welding. It can be used on MS, CS and LA  steels.

ER 70S-2 is available in 0.80 to 3.20 mm sizes, whereas ER 70S0-6 is available mostly in 0.80 to 2.00 mm sizes. 

Make a mock-up weld and see whether it meets X-ray qualified welds and check the mechanical properties prior 

to any further action.

 

C Sridhar.

  

On Wed, 16 Aug 2023 at 14:22, Vishwas Keskar Welding Manager WELDING <vvkeskar123@gmail.com> wrote:

You can write ER70S-6 with a note in WPS that :

Mn content shall not exceed 1.6 % 

Si content shall not exceed 1.0 % 

Thanks

VIshwas - IWE 

On Monday, June 3, 2019 at 7:48:39 PM UTC+5:30 K K wrote:

Dear All,

My PQR is qualified with ER70S-2.

Can I use ( Mention) ER70S-6 in WPS.

Regards

Kiran

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Re: [MW:34494] Re: ER70S-2 and ER70S-6 (GTAW Process)

Any advantage in writing chemistry in WPS, how it will help welders. 

On Wed, Aug 16, 2023, 2:22 PM Vishwas Keskar Welding Manager WELDING <vvkeskar123@gmail.com> wrote:

You can write ER70S-6 with a note in WPS that :

Mn content shall not exceed 1.6 % 

Si content shall not exceed 1.0 % 

Thanks

VIshwas - IWE 

On Monday, June 3, 2019 at 7:48:39 PM UTC+5:30 K K wrote:

Dear All,

My PQR is qualified with ER70S-2.

Can I use ( Mention) ER70S-6 in WPS.

Regards

Kiran

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Re: [MW:34493] Re: ER70S-2 and ER70S-6 (GTAW Process)

Due to triple deoxidizers present in the filler, the ER70S-2 wire is much more suited to weld on rusted surfaces 

compared to ER70S-6. Rust, which is an iron oxide, will react very fast with Ti, Zr, or Al to form their oxides, such 

as TiO₂ or ZrO₂ or Al₂O₃ thus the Mn will be saved. Mn provides strength and toughness to the weldment. So, 

any loss of Mn from the weld deposit will actually reduce the strength of the weld metal.

 

Loss of silicon will make the weld pool sluggish and can result in a poor weld bead appearance. There is no 

difference between ER 70S-6 and ER 70S-2 based on the mechanical properties, as both have 70ksi Tensile 

strength and 58 Ksi Yield strength. Both wires provide equal minimum specified tensile strength, yield strength, 

ductility, and toughness values.

  

ER 70S-6 is a solid TIG rod that is used for general-purpose welding. It can be used on MS, CS and LA  steels.

ER 70S-2 is available in 0.80 to 3.20 mm sizes, whereas ER 70S0-6 is available mostly in 0.80 to 2.00 mm sizes. 

Make a mock-up weld and see whether it meets X-ray qualified welds and check the mechanical properties prior 

to any further action.

 

C Sridhar.

  

On Wed, 16 Aug 2023 at 14:22, Vishwas Keskar Welding Manager WELDING <vvkeskar123@gmail.com> wrote:

You can write ER70S-6 with a note in WPS that :

Mn content shall not exceed 1.6 % 

Si content shall not exceed 1.0 % 

Thanks

VIshwas - IWE 

On Monday, June 3, 2019 at 7:48:39 PM UTC+5:30 K K wrote:

Dear All,

My PQR is qualified with ER70S-2.

Can I use ( Mention) ER70S-6 in WPS.

Regards

Kiran

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Re: [MW:34492] Re: ER70S-2 and ER70S-6 (GTAW Process)

You can write ER-70S-6 with a note in WPS for Non Sour service. 

Vào Th 4, 16 thg 8, 2023 vào lúc 11:52 Vishwas Keskar Welding Manager WELDING <vvkeskar123@gmail.com> đã viết:

You can write ER70S-6 with a note in WPS that :

Mn content shall not exceed 1.6 % 

Si content shall not exceed 1.0 % 

Thanks

VIshwas - IWE 

On Monday, June 3, 2019 at 7:48:39 PM UTC+5:30 K K wrote:

Dear All,

My PQR is qualified with ER70S-2.

Can I use ( Mention) ER70S-6 in WPS.

Regards

Kiran

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Best & Regard

Pham Thanh Tinh

QC Manager

China National Chemical Engineering Third Co.LTD

South Ghawar Gas Separation Plant & Associated Facilities Project

Email: tinhamem@gmail.com / pham@sinotcc.com

Mobile phone +966. 556802308 

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