VNIIMETMASH - Products - Cold rolling mill HPC 50-120 for production of hydraulic cylinder's housing


Cold rolling mill HPC 50-120 for production of hydraulic cylinder's housing

The cold rolling mill 50-120 is intended for production of billets for hydraulic cylinder's housing which are used in hydraucally operated plunger lifts for dump trucks, in electrical-hydraulic drillingrigsandin otherhydraulicdriveswith cylinders with long stroke.

The use of method for cold rolling by rolls instead of multiple-step mechanical machining reduces metal wastes by 15-20% due to the fact, that the billet is shorter than finished piece by to 2…2,5 times and decreases production working hours by 30% at the expense of reduction of intermediate operations and outputincrease.

Technical specifications

Billet is hot rolled steel tube: - outside diameter, mm - wall thickness (max), mm - length, mm	60…138 16 600…3000
Finished cylinder housing: - outside diameter, mm - wall thickness (max), mm - length, mm - precision along outside diameter, mm - precision along inside diameter, mm - cleanliness of external surface, mkm - cleanliness of inner surface, mkm	50…120 10 5000 0,05…0,15 0,03…0,05 0,4…0,6 0,8…1,25
Reduction of tube cross section per 1 stroke of stand (max), %	60
Output, m/h	25
Overall sizes of mill: - length, m - width, m - height above floor, m	18,5 4 1,9
Mass of the mill without electrical equipment, t	45

Layout of rolling mill ХПЦ 50-120

1 - working line; 2 - intermediate frame; 3 - main drive; 4 - device for feeding and turning of billet; 5 - working stand; 6 - feeding chuck; 7 - device for clamping of mandrel bar; 8 - hydraulic and lubricant equipment.

Cooperation proposals:

Manufacturing of mills;
Tests and mastering mills at the customer;
Organization of co-production.