Removing Rust & Corrosion from Moulding Tool - Case Study

Customers Criteria: To remove burn marks and rust from mould tool
Component: Moulding tool
Material: Tool Steel
Contamination prior to cleaning: Burn Marks, Rust
Total number off: 2
Number off per run: 1

Ultrasonic Cleaner Cleaning Agent Temperature(s) Concentration
Kemet 12 Ultrasonic Cleaner Solvit 3 40°C 10%

Process for cleaning mould tool

Allow the ultrasonic to heat up to temperature, then place the part into the basket and run a cycle of 10 minutes manually dunking after 5 to remove any loose debris. Do not leave the part in the ultrasonic for to long as this may start to blacken and discolour the part.

Etched effect: None

Before cleaning moulding tool

before cleaning moulding tooling

before cleaning moulding tool

After cleaning moulding tool

after cleaning moulding tooling

after cleaning moulding tool

Customers Criteria: Free from all contamination
Component: Plastic injection moulds tools
Material: Tool Steel
Contamination prior to cleaning: Plastic injection residue, corrosion

Ultrasonic Cleaner Cleaning Agent Temperature(s) Concentration
Kemet 30 Solvit 3 40°C 10%
Kemet 30 DI water + Korrostop 5000 50°C 0.1%
Versa 120 Dryer N/A 65°C 100%

Quickest way to remove rust

Due to the moulds being heavily contaminated with corrosion an acidic product is required; Solvit 3 was used due to its high de-oxidizing and degreasing properties. All tanks were degassed for 10 minutes and allowed to reach the required temperature before cleaning. All tools had a total cleaning time of 20 minutes in the ultrasonic using the sweep mode to ensure a thorough clean. Next the tools were rinsed in deionised water with a 0.1% concentration of a corrosion additive Korrostop 5000. Korrostop 5000 is used to protect steel against corrosion and does not leave any film that could disturb the following operations. Next the tools were dried in a hot air dryer unit for 20 minutes at 70°C. Note: Increased concentration and process time may produce a better result.

Before removing rust

quickest way to remove rust - before

how to easily remove rust - before

After removing rust

quickest way to remove rust - after

how to easily remove rust - after

Customers Criteria: Remove all contamination
Component: Tool
Material: Tool Steel
Contamination prior to cleaning: Grease, dirt, burn marks & plastic extrusion
Number off per run: 1

Ultrasonic Cleaner Cleaning Agent Temperature(s) Concentration
Versa 120 H14 50°C 10%
Versa 120 De-ionised water 50°C 100%
Versa 120 Dryer N/A 70°C 5 minutes

Process for removing grease, dirt, burn marks & plastic extrusion

The tool was placed into the basket and then submerged into the tank and set for a cycle time of 10 minutes. As soon as the Sonics are turned on you can see the contamination being removed. After the wash cycle the parts have to be rinsed to neutralize any left on cleaning agent and contamination. Finally the parts were dried in the Versa hot air dryer set at 70°C for 5 minutes.

% Satisfactorily Cleaned: 100%

Before cleaning

before removing burn marks

before removing grease and dirt

After cleaning

after removing burn marks

after removing grease and dirt