Question

Please watch integrated tube production process from SANDVIK, a global manufacturer of stainless steel and alloy steels products on https://goo.gl/tjQzsP. a. Please identify the step by step processes to make steel tube product. b. Please explain the purpose of each of the process. c. Investigate the current step by step processes to make the steel tube and suggest any idea for improvement as detail as possible. Improvement can be in the forms of reduction on production time, reduction on defect product, reduction on energy consumption, reduction on step of processes, improvement on recyclability, etc.

Answer 1

Step by Step process to make steel tube products are explained below:

Step 1: a) Analyzing raw materials (scrap) and removing harmful ingredients

b) Melting the raw materials at 1600 degree centigrades in an electric arc furnace

Step 2: Pre rolling

Step 3: Transfer the blooming mill billets to a heating furnace

Step 4: Cut the bars into desired sizes

Step 5: Heat the extruded billet to 1200 degrees

Step 6: Lubricate internally and Externally with a glass powder

Step 7:Insert mandrel to the billet

Step 8: Carryout cold working process

Step 9: Straighten the the tubes and pickled in acid to remove metal oxides and glasse

Step 10: Carryout visual inspection

Step 11: Carryout annealing process

Step 12: Carryout straightening,polishing and cleaning of tubes

Step 13: Carryout ultrasonic and eddy current test to find the defects

Step 14: Carryout destructive testings