Technology of surface finish
Introduction
In the field of surface finish our company PLASTIME.CHEMI ltd. supplies modern production units for preliminary treatment determined for hot-galvanizing and technologies of protective and decorative coating by chemical and electro-chemical way. These technological units fulfil the requirements of the law of the quality of the product surface and they fulfill all the requirements of the enviromnental law.
Hot-galvanizing and pickling plants
- Continuous pickling lines
- Technological equipment for pickling of piece goods
Parts of those lines are technological units:
- Pickling vats
- Exhaust and feed piping
- Neutralizing stations
- Equipment for reclaiming of the flux agent
Electro-plating lines
- For technologies of chemical and electro-chemical finish surface
- Both automatic and manual regime of the line
- Both suspention and collective goods
Parts of those lines are technological units:
- Electro-plating vats
- Neutralizing stations
- Selective refinement stations
- Exhaust and feed piping
- Capture of metals from rinsing waters
- Ion stations for the preparation of DEMI water
Technical description
It includes in itself a set of technological equipment that provide the surface finish of the goods. The whole equipment is composed of technological units - lines. Parts of those are independent vats equiped by necessary facilities. Vats are made of plastic, according to the needs they are reinforced by steel sections that are provided with protective corrosion-resistant paint or with a plastic cover. Individual vats are divided into technological vats, in which certain technological operations are executed, and rinsing vats (one-stage, two-stage). Rinsing can also be divided into through-flow or non-flow. All the operations of surface finish can be executed at normal temperature or elevated temperature. When using chemical material or elevated temperature, the vats are equiped by an exhaust frame attached to the central exhaust. In between the individual vats the transport of the goods is realized by mechanic conveyer or by manul attendence on suspensions or on drums. Special technologies (for example continuous wire pickling) are executed in such lines that can operate closed without exhaust air-conditioning or with hinged cover and exhaust air-conditioning. Some special technologies (in jewellery) can be executed on plastic electro-plating tables that are dimensionaly adapted to the wish of the customer.
Used materials
| Material | Marking | Span of temperatures |
| Polyethylen | PE-HWU, PE-HWST | -50 - 80°C |
| Polypropylen | PP-DWU, PP-DWST | 0 - 93°C |
| Polyvinylchlorid | PVC-CAW | 0 - 60°C |
| Polyvinyldenfluorid | PVDF | -50 - 140°C |
The equipment of technological lines
- Vats
- Exhaust and feed air-conditioning
- Piping
- Steel constructions and conveyers
- Electroinstallations and control systems
- Stock system
- Capture of metals from rinsing waters
Facilities
- Heating, cooling
- movement of the cathode bar
- Fittings
- Clarification
- Agitators
- Sprinkle equipment
- Pickling crates
- Galvanic drums
Technology of surface finish
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