Antirust Method For Iron-based Powder Metallurgical Parts?

Ferro-based Powder Metallurgical Parts-Method for the Production of Rust Control for Synchronizer Tooth Hub:
1, iron rust prevention: Since the purchased iron powder is a powdered solid object, there will be a large number of pores between the iron powder, such as entering wet air, will rust and block in a very short period of time, can not be used. Therefore, the purchased iron powder is installed in a sealed thick plastic bag, and a desiccant is installed inside, and the outside is packaged in a thick woven bag to facilitate lifting.
2, iron powder storage: iron powder stored in the warehouse, must follow the principle of first step out. After mixing the iron powder, according to the packaging method at the time of purchase, it is completely sealed in a thick plastic bag to prevent the mixed iron powder from oxidizing; Place on wooden tray, use time is generally controlled within 3 days.
3, the use of iron powder suppression process: In the process of pressing the synchronous gear hub production, the use of mixed iron powder with the collar can not be used. Because of the large number of tasks, all iron powder can be collected at once, so that the number of presses used in each class can be achieved. How much, how much, Strictly control the stock of mixed iron powder between processes.
4, Synchronizer gear hub pressed rough storage: Synchronizer gear hub pressed rough, low strength, easy to damage, must be lightly placed in the plastic tray of the vehicle. Sintered and pressed blank within 48 hours, no additional packaging protection can be carried out. Over time, the vehicle will be wound and sealed with plastic film to prevent wet air from entering.
5, after the sintering of the gear hub sintering billet, three different anti-rust test methods are used: after sintering, no anti-rust error application is adopted, and 30 # oil is used for finishing the powder metallurgical gear hub; After sintering, immediately dip the F901 film rust resistant oil, and use 30 # oil when finishing the powder metallurgical tooth hub; Burn combined, IE immediately dip WD40 rust resistant oil, finishing powder metallurgical tooth hub with 30 # oil.
The above is the anti-rust method for iron-based powder metallurgical parts is introduced to this, and a simple and effective anti-rust measure for iron-based powder metallurgical parts is found, so that during the production process, the anti-rust cost is reduced and the production efficiency is improved.