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Text File | 1990-11-17 | 5.6 KB | 1,080 lines

text 0 0 307 190 Try some other extremes. You will soon see that the angle at which the torch flame is aimed at the steel tube will affect your control of the weld. Experiment with different angles. Try different size torch tips and different gas velocities. Try different distances between the torch tip and the the steel tube. You'll notice some startling results. If you move the torch too close, the flame is extinguished or even more surprisingly, it explodes the molten puddle with a loud bang. If you move the torch too far away, the exhaust from the torch no longer keeps oxygen in the air away from the molten steel, and it sparks and burns, ~ text 328 3 635 103 leaving a porous surface. Try different size welding rods. As you'll see, the larger diameter ones are harder to melt and the smaller ones are hard to control. After you have repeated this practice as much as 100 times, you'll have a fair feeling for the factors that affect welding control (and your arms will be tired). ~ line 344 126 563 126 line 347 166 561 166 ellipse 564 146 0 359 5 20 circle 435 145 17 circle 451 145 15 circle 464 145 15 circle 475 145 15 circle 487 145 15 circle 502 145 15 fatbit 437 143 0 438 142 0 437 147 0 438 148 0 439 149 0 440 149 0 441 149 0 439 141 0 440 141 0 441 141 0 439 143 1 441 143 1 443 143 1 436 147 0 437 147 1 438 147 1 439 147 1 440 147 1 441 148 1 450 142 0 450 143 0 449 144 0 449 146 0 449 145 0 450 147 0 462 142 0 461 143 0 460 144 0 460 145 0 460 146 0 461 146 1 461 147 0 462 148 0 461 148 1 461 146 0 461 148 0 474 148 0 473 147 0 472 146 0 472 145 0 471 145 1 471 144 1 471 145 0 472 144 0 471 144 0 473 143 0 474 142 0 488 142 0 488 143 0 487 144 0 487 145 0 486 145 1 486 146 1 486 145 0 486 146 0 487 146 0 488 147 0 488 148 0 488 142 1 488 148 1 489 148 0 489 142 0 446 145 1 447 142 1 441 141 1 447 139 0 448 139 0 448 140 1 449 140 1 458 140 0 464 139 0 465 139 0 467 139 0 474 140 1 475 139 0 472 139 0 487 139 0 502 138 1 502 139 0 500 151 0 501 151 0 504 151 0 486 151 0 487 151 0 488 151 0 490 151 0 478 151 0 477 151 0 469 151 0 468 151 0 475 151 0 462 151 0 450 151 0 445 150 0 450 151 1 451 151 0 459 150 0 460 150 0 461 150 1 464 149 0 468 150 0 469 150 0 475 149 0 481 150 0 490 144 0 500 148 0 479 146 0 478 143 0 466 144 0 452 146 0 451 142 0 446 140 0 445 140 0 444 139 0 439 138 0 442 152 1 441 152 0 440 152 0 439 152 0 446 151 0 447 151 0 449 151 0 450 151 0 451 151 1 469 140 0 470 140 0 506 138 1 506 139 0 509 142 1 508 143 1 507 143 1 507 145 1 508 145 1 509 146 1 510 146 1 511 146 1 512 146 1 512 147 1 505 150 1 505 149 1 506 149 1 506 148 1 496 144 1 495 145 1 495 147 1 484 144 1 484 149 1 479 147 1 478 147 0 478 148 1 479 148 1 481 148 1 478 143 1 476 143 1 473 143 1 471 143 1 470 146 1 471 146 1 472 146 1 473 146 1 474 146 1 473 144 1 473 143 0 472 146 0 470 148 1 474 146 0 463 143 1 457 147 1 458 147 1 458 146 1 462 146 1 455 143 1 445 147 1 fatbit 435 145 1 434 145 1 434 146 1 435 146 1 435 145 0 434 145 0 433 145 1 434 145 1 435 145 1 435 144 1 434 144 1 433 144 1 433 145 0 432 145 1 433 145 1 433 146 1 438 145 1 437 145 1 437 146 1 436 146 0 435 147 1 436 146 1 433 141 1 432 141 1 431 141 1 424 145 1 425 146 1 426 146 1 426 147 1 427 147 1 434 151 1 428 142 1 429 150 1 430 150 1 430 149 1 438 139 1 421 141 0 422 141 0 423 141 1 420 148 0 422 149 0 line 344 127 354 136 line 354 136 343 145 line 343 145 348 156 line 348 156 352 159 line 352 159 347 165 changepattern 11 flood 401 142 text 331 170 621 180 ~ text 327 170 639 179 Oxidized weld, torch too far away.~ fatbit 420 144 0 422 146 0 424 148 0 428 144 0 426 146 0 428 148 0 427 147 0 430 146 0 425 146 0 432 148 0 430 149 0 426 150 0 434 150 0 434 151 0 434 152 0 438 142 0 430 142 0 426 142 0 442 142 0 440 144 0 440 145 1 442 146 0 444 148 0 448 144 0 448 145 1 450 146 0 454 142 0 456 144 0 458 142 0 459 142 1 460 144 0 459 142 0 462 146 0 460 148 0 456 148 0 454 146 0 456 150 0 468 144 0 470 142 0 466 142 0 462 142 0 440 140 0 435 140 1 436 140 0 435 140 0 432 140 0 428 140 0 424 144 0 444 144 0 446 146 0 440 145 0 461 149 0 453 149 0 468 148 0 471 148 1 472 148 0 471 148 0 474 149 0 476 143 0 471 143 0 fatbit 470 146 0 474 146 0 476 144 0 472 144 0 474 142 0 470 148 0 482 142 0 484 144 0 486 146 0 482 146 0 484 148 0 487 149 0 486 150 0 492 148 0 496 148 0 494 146 0 498 146 0 492 144 0 496 144 0 494 142 0 490 142 0 504 148 0 508 148 0 515 148 0 506 146 0 507 146 1 509 146 0 510 146 0 511 146 0 514 146 0 508 144 0 512 144 0 504 144 0 507 146 0 506 142 0 507 142 1 510 142 0 507 142 0 502 142 0 498 142 0