Welding method and technology of carbon dioxide gas shielded welding
RELATED INFORMATIONS
- 1. Can C02 gas shielded welding weld stainless steel? The base metal is 301 stainless steel, 3mm. With pure argon and 306 stainless steel solid wire, the weld is blackened and the surface is not bright. The main purpose is to make the weld surface bright and not blackened. What process should be used to weld? How can the voltage and current be adjusted? Can pure argon be used? Why can't it be used? Some people who have done this line or are doing this line come in to explain,
- 2. Cut a rectangular piece of paper 120 cm in length and 80 cm in width into several equal small squares, and there is no surplus. How many pieces can be reduced at least Determinant
- 3. How many pieces of paper can be cut at least by cutting a 120cm long and 80cm wide rectangular paper into a square with the same area (the rest of the paper)?
- 4. There are two 80cm long and 45cm wide rectangles, which are planned to be spliced into 120cm long and 30cm wide rectangles. How to splice them? Using more than two methods, I'm sorry to miss one sentence: two 80cm long and 45cm wide rectangles
- 5. As shown in the figure, a rolling gate is supported by a 18cm wide and 80cm long rectangular board, which can support the rolling gate at most______ Cm high
- 6. A small rectangle is dug out from the middle of a rectangular board with a length of 300cm and a width of 200cm, so that the width around the remaining rectangular frame is the same, and the area of the small rectangle is half of the area of the original board. Calculate the width of the remaining rectangular frame (accurate to 1cm)
- 7. Saw the biggest circle from a rectangular board 5 decimeters long and 4 decimeters wide. How many square decimeters are the remaining boards?
- 8. If X & # 178; - Y & # 178; - x + y = (X-Y) * a, then a=__________ . If X & # 178; - Y & # 178; - x + y = (X-Y) * a, then a=__________ .
- 9. Solving equation x2-6 / x2-x = X-1
- 10. The solution equation: x2-2 [x] - 3 = 0
- 11. The length, width and height of a cuboid are three continuous natural numbers, and its volume is 3360 cubic centimeter
- 12. In a metal smelter, 27 square ingots of the same size were melted in the furnace and then fired into a rectangular ingot. The length, width and height of the rectangular ingot were measured to be 160cm, 80cm and 40cm respectively. What was the original edge length of the square ingot?
- 13. In a metal smelter, 27 square ingots of the same size were melted in the furnace and then fired into a rectangular ingot. The length, width and height of the rectangular ingot were measured to be 160cm, 80cm and 40cm respectively. What was the original edge length of the square ingot?
- 14. A worker nailed a rectangular mail box with a thin board, and the Nylon Braided strips were reinforced in three directions as shown in the figure. The Nylon Braided strips were 365 cm, 405 cm and 485 cm respectively. If the joint overlap of each nylon strip was 5 cm, how many cubic meters is the volume of this rectangular box?
- 15. A cuboid packing box, measured from the inside, with a side length of 0.8 m square at the bottom, 5 m. what is the volume of this packing box/
- 16. The shape of the packing box of a refrigerator is a cuboid without bottom surface, which is 14 decimeters long and 6 decimeters wide. It takes at least more time to make the packing box Less square decimeter cardboard?
- 17. Use 240 cm iron wire to make a largest cube frame, and then use cardboard to make 6 pieces of bread. At least how many square centimeters of cardboard? What is the volume of the carton in cubic centimeter?
- 18. Use 240 cm iron wire to make a largest cube frame, and then use cardboard to make 6 pieces of bread. At least how many square centimeters of cardboard? What is the volume of the carton in cubic centimeter?
- 19. A cuboid outer packing carton is 0.8 meters long, 0.4 meters wide and 0.15 meters high. How many square meters of cardboard should be used to make the carton
- 20. A cube with 2 mm edge length is cut into two cuboids with equal volume. The surface area of one cuboid is 1______ dm2.