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In spot welding of two stainless steel sheets, each of 5mm thickness, welding current 15000A is applied for 0.4sec, the heat dissipated to the base metal is 22000J . Assuming that the heat required for melting 2mm3 volume steel is 30J and contact resistance between sheets is 0.0004Ω. The volume (in mm3) of weld nugget is__________.
Correct answer is between '932,934'. Can you explain this answer?
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Verified Answer
In spot welding of two stainless steel sheets, each of 5mm thickness, ...
Total heat generated = I2RT
= (15000)2 x 0.0004 x 0.4
=36000
Heat required to melt the nugget = 36000 -22000
=14000J
Volume of nugget = 14000/15 = 933.33 mm3
= (15000)2 x 0.0004 x 0.4
=36000
Heat required to melt the nugget = 36000 -22000
=14000J
Volume of nugget = 14000/15 = 933.33 mm3
Most Upvoted Answer
In spot welding of two stainless steel sheets, each of 5mm thickness, ...
To solve this problem, we need to calculate the heat generated during spot welding and compare it to the heat dissipated to the base metal.
Heat generated during spot welding can be calculated using the formula:
Heat Generated = I^2 * R * t
Where:
I = welding current (A)
R = contact resistance (Ω)
t = welding time (s)
Given:
I = 15000A
R = 0.0004Ω
t = 0.4s
Heat Generated = (15000^2) * 0.0004 * 0.4
Heat Generated = 3600J
Now, we need to compare the heat generated to the heat dissipated to the base metal.
Heat Required for Melting 2mm^3 Volume Steel = 30J
Heat Dissipated to Base Metal = 22000J
Since the heat generated (3600J) is less than the heat dissipated to the base metal (22000J), it indicates that not enough heat is generated during spot welding to melt the metal.
Heat generated during spot welding can be calculated using the formula:
Heat Generated = I^2 * R * t
Where:
I = welding current (A)
R = contact resistance (Ω)
t = welding time (s)
Given:
I = 15000A
R = 0.0004Ω
t = 0.4s
Heat Generated = (15000^2) * 0.0004 * 0.4
Heat Generated = 3600J
Now, we need to compare the heat generated to the heat dissipated to the base metal.
Heat Required for Melting 2mm^3 Volume Steel = 30J
Heat Dissipated to Base Metal = 22000J
Since the heat generated (3600J) is less than the heat dissipated to the base metal (22000J), it indicates that not enough heat is generated during spot welding to melt the metal.
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In spot welding of two stainless steel sheets, each of 5mm thickness, welding current 15000A is applied for 0.4sec, the heat dissipated to the base metal is 22000J . Assuming that the heat required for melting 2mm3volume steel is 30J and contact resistance between sheets is 0.0004Ω. The volume (in mm3) of weld nugget is__________.Correct answer is between '932,934'. Can you explain this answer?
Question Description
In spot welding of two stainless steel sheets, each of 5mm thickness, welding current 15000A is applied for 0.4sec, the heat dissipated to the base metal is 22000J . Assuming that the heat required for melting 2mm3volume steel is 30J and contact resistance between sheets is 0.0004Ω. The volume (in mm3) of weld nugget is__________.Correct answer is between '932,934'. Can you explain this answer? for GATE 2024 is part of GATE preparation. The Question and answers have been prepared according to the GATE exam syllabus. Information about In spot welding of two stainless steel sheets, each of 5mm thickness, welding current 15000A is applied for 0.4sec, the heat dissipated to the base metal is 22000J . Assuming that the heat required for melting 2mm3volume steel is 30J and contact resistance between sheets is 0.0004Ω. The volume (in mm3) of weld nugget is__________.Correct answer is between '932,934'. Can you explain this answer? covers all topics & solutions for GATE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In spot welding of two stainless steel sheets, each of 5mm thickness, welding current 15000A is applied for 0.4sec, the heat dissipated to the base metal is 22000J . Assuming that the heat required for melting 2mm3volume steel is 30J and contact resistance between sheets is 0.0004Ω. The volume (in mm3) of weld nugget is__________.Correct answer is between '932,934'. Can you explain this answer?.
In spot welding of two stainless steel sheets, each of 5mm thickness, welding current 15000A is applied for 0.4sec, the heat dissipated to the base metal is 22000J . Assuming that the heat required for melting 2mm3volume steel is 30J and contact resistance between sheets is 0.0004Ω. The volume (in mm3) of weld nugget is__________.Correct answer is between '932,934'. Can you explain this answer? for GATE 2024 is part of GATE preparation. The Question and answers have been prepared according to the GATE exam syllabus. Information about In spot welding of two stainless steel sheets, each of 5mm thickness, welding current 15000A is applied for 0.4sec, the heat dissipated to the base metal is 22000J . Assuming that the heat required for melting 2mm3volume steel is 30J and contact resistance between sheets is 0.0004Ω. The volume (in mm3) of weld nugget is__________.Correct answer is between '932,934'. Can you explain this answer? covers all topics & solutions for GATE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In spot welding of two stainless steel sheets, each of 5mm thickness, welding current 15000A is applied for 0.4sec, the heat dissipated to the base metal is 22000J . Assuming that the heat required for melting 2mm3volume steel is 30J and contact resistance between sheets is 0.0004Ω. The volume (in mm3) of weld nugget is__________.Correct answer is between '932,934'. Can you explain this answer?.
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