Acid Alkali Washing Brush
Acid alkali washing brush: chemical-resistant nylon/PP/PBT fill, 316 stainless staples and PP handle for tank walls, sumps.
- Head Ø
- 30–80 mm
- Handle
- 180–300 mm
PRODUCT CATEGORY
Metal & Chemical Processing Line Brushes
Brushes used around pickling, plating and chemical-treatment lines live in an environment where chemistry can matter more than abrasion. Acid, alkali and treatment baths can attack the wrong filament, core or metal component even when the brush shape is correct.
Browse Pickling, Plating & Chemical-Line Brushes
Compare acid/alkali wash brushes, anodizing, electroplating, phosphating, passivation and chemical-resistant hand or roller brushes.
Anodizing Line Brush
Configurable anodizing line brush for wiping, cleaning, and sealing on metal treatment lines.
- Head length
- 100–3000 mm
Metal Acid Pickling Brush Roller
Custom acid pickling brush roller for steel strip and line-roll cleaning.
- Head Ø
- 60–600 mm
- Head length
- 200–4500 mm
Passivation Line Brush
Acid-resistant roller or strip spanning the strip width, lifting oxide smut and acid salts after the bath so.
- Head Ø
- 60–600 mm
- Head length
- 200–4500 mm
Phosphating Line Brush
Custom phosphating line brushes in PP, PBT or acid-resistant stainless steel.
- Head Ø
- 60–600 mm
- Head length
- 200–4500 mm
Plating Line Brush Roller
Plating line brush roller for oxide, salt, and sludge removal in pickling and rinse sections.
- Head Ø
- 60–600 mm
- Head length
- 200–4500 mm
PP Chemical Resistant Hand Brush
Chemical-resistant polypropylene hand brush for manual cleaning of acid pickling tanks, degreasing baths, plating racks, sumps, and baffles.
- Head Ø
- 45 mm
- Head length
- 120 mm
- Handle
- 160 mm
Which brush fits which metal or chemical line?
Metal finishing lines move strip, sheet or parts through baths of acid, alkali, phosphate and plating solutions, then rinse them. Brushes scrub the surface between baths, keep rollers clean, wipe off liquid and clean the tanks by hand. Every one of them lives in the chemistry, and that decides the build before anything else.
| Line or job | Brush in this range | Form |
|---|---|---|
| Pickling and degreasing | Metal acid pickling brush roller | Roller, 60–600 mm diameter, up to 4,500 mm |
| Passivation of stainless | Passivation line brush | Roller or lath |
| Phosphating ahead of paint | Phosphating line brush | Spiral roller or strip |
| Plating lines | Plating line brush roller | Roller or segmented lath |
| Anodizing lines | Anodizing line brush | Strip, 100–3,000 mm |
| Tank walls, baffles and parts by hand | Acid alkali washing brush; PP chemical-resistant hand brush | Hand-held |
Which fill survives which bath?
| Chemistry | Fill to start with |
|---|---|
| Strong hydrochloric or sulfuric acid, up to about 80°C | PP |
| Hotter acid duty, up to about 120°C | PBT |
| Hot alkaline degreasing | Nylon PA or PA612, after the chemistry is reviewed |
| Phosphate solutions, pH about 2–5 | PP, PBT or acid-resistant stainless wire |
| Mechanical descaling on stainless | 316 stainless wire |
| Smut and leftover scale after the acid | Silicon carbide abrasive nylon |
Concentrated hydrochloric and sulfuric acid attack nylon, so nylon belongs ahead of the acid, in the alkaline degreasing section, or in neutral rinses. Send the bath, its concentration and temperature with the enquiry, and the fill is chosen to them.
Why does the core matter as much as the fill?
Because a roller fails at its weakest part. A plain carbon steel core in an acid bath corrodes, swells its coating and starts to run out of true long before the fill is worn. Cores are coated steel, 304 or 316 stainless, or polymer, chosen so they last as long as the fill in that bath. Journals, keyways and couplings are copied from the existing drive, and the roller is balanced for the line speed.
How are line brushes set?
Scrubber rollers usually work in pairs, above and below the strip, often against a backup roll, with engagement from a light wipe to an active scrub as the duty needs. A spiral fill carries loosened smut and liquid towards the strip edges. Strip brushes set across the pass break the liquid film as the strip leaves the rinse. Engagement is re-set as the fill wears, and cores and journals are checked at every change.
What about cleaning tanks by hand?
Tank walls, baffles, racks and parts are cleaned with hand brushes that will not soften or rust in the solution. The PP chemical-resistant hand brush is molded in one piece, with no metal fasteners. The acid alkali washing brush has a PP or PBT block, 316 staples and nylon, PP, PBT or abrasive fill to suit the deposit. The site's chemical safety rules come first: protective equipment, ventilation and draining the tank.
How do you know a line brush needs changing?
The strip tells you first. Smut or scale left on the surface after the scrubber, uneven cleaning across the width, or streaks after the rinse all point to the brushes. Look at the fill next: filament that has shortened, bent over or gone brittle and snapped no longer reaches the strip at the set engagement. Look at the core last: blistered coating, pitting, or a roller that wobbles in its bearings. A brush that is re-set again and again to keep contact is near the end of its life. Keep one set of spare rollers for each position, so a change is made at a planned stop rather than a breakdown.
What is the minimum, and what should you send?
Line rollers and strips are built to the machine and start at 100 pieces per design. The hand brushes start at 500.
- The line drawing: strip width, brush position, diameter and shaft.
- Each bath the brush meets: chemical, concentration and temperature.
- Strip or part material and the deposit.
- Line speed, and whether the roll is driven or idling.
- Quantity per design.
Send the Bath Conditions and Brush Duty
Provide chemical, concentration, temperature, exposure time, metal surface, brush function and mounting dimensions. We can then evaluate material and geometry together.