Inspection items before rolling mill use

Inspection items before rolling mill use

1、Examine rolling mill
2、Examine the quality of groove, If found the groove has wear seriously or other abnormalities, Should change groove promptly.
3、Examine screw down mechanism, axial adjusting device’ move is flexible or not; check the roll balance device is good or not; Check the roll axis fixed device is firm or not、the gap is suitable or not.
4、According to the requirements to adjust caliber size and rolling line position. 
5、Check the lock cylinder is locked or not (piston rod position), required locking mechanism to lock the roll housing and base tightly.
6、Check the connection of cardan axis, required the screw bolt、nut、cushion ring、pin shaft etc. Which on the cardan axis is complete and firm, well driving conditions, avoid the cardan axis is away from roll to cause big equipment accidents.
7、Check the cardan axis bearer of vertical mill, required the right position, reliable locking, and good driving conditions.
8、Check the cooling water is expedite, sufficient or not, the position is right or not, the pipeline is good or not.
9、rolling mill is responsible for installation and inspection. It can be used just by radial fine-turning after putting on rolling line by requirements.
10、Guide device inspection
11、Check the import and export of guide by every frame and pass, required the guide model and specification is in character with the variety and specification by rolling.
12、 The guide import gripping rolled piece should keep appropriate elasticity, yoke plate should be adjusted flexible、firm and durable; Guide plate can not loose, wear is not too serious, to ensure that you can centralizer rolled pieces to enter caliber correctly.
13、 The guide export、reverse tube must close to roller, ensure the rolled pieces to derive smoothly; The angle of reverse tube and reverse roller should adjust expediently, ensure the reverse angle of rolled pieces is correct.
14、Check the installation case of guide box which is required the right position on the guide beam, firm installation.
15、Check the guide beam, required smooth vertical and horizontal. The beam board should be kept clean and smooth; the mobile screw of guide beam should be kept flexible turn, thread space can not be too large to ensure that it can not excursion by itself after fixed guide, when change groove, it can move smoothly.
16、Check the run tank and horn mouth, it must alignment roll line, firm and reliable, mustn’t loose; There is no iron sheet and foreign body in the run tank and horn mouth, so as not to impede the normal moving of rolled pieces or scratch the rolled pieces.
17、The cooling water is required smooth、sufficient、effective.
18、Loop inspection 
19、Check the import and export of loop is correct or not, the road is smooth or not.
20、Check the set bit detector is in good condition and sensitive or not.
21、Check the loop air cylinder is in good condition or not, push roller action is correct and flexible or not.
22、Check the cooling water is smooth and effective or not.
23、Flying shear inspection
24、Check the flying shear knives is in good condition or not, the gap is suitable or not, the gap is 0.15~0.3mm, contact ratio is 0.5 ̄2mm;The knives must be installed firmly.
25、Check front and back guide slot and guide plate, they can not impede the normal turn of flying shear arm and the rolled pieces can pass correctly and freely.
26、Check the supply of lube oil, ensure a good lubrication.
27、Check the work of flying shear is good or not, check the knives stop position is correct or not.
28、1# Flying shear should be checked that the work of pneumatic clutch is normal or not, the pressure of air supply source, dewater, purification, oil spray device is normal or not, various gas valve action is sensitive or not, the clutch gap and action is normal or not. 
29、Check the work of pinch roll is normal or not.
30、Check the collection device and cooling water system is normal or not.

intersting Products:*
Name:*
Company:
Email:*
Tel/Mobile:
Tell us your needs (as specific as possible)
-