Fe-based powder metallurgy is a kind of efficient metal forming process, which is material saving, energy saving, no pollution and suitable for mass production.Because the iron based powder metallurgy parts are metal powder as raw materials, through the formation of pressing, sintering, machining, heat treatment and other processes, so the powder metallurgy products must have a certain number of holes...
Iron - based powder metallurgy, Ningbo powder metallurgy
Fe-based powder metallurgy is a kind of efficient metal forming process, which is material saving, energy saving, no pollution and suitable for mass production.Because the iron based powder metallurgy parts are metal powder as raw material, through pressing forming, sintering, machining, heat treatment and other processes and become, so the powder metallurgy products must have a certain amount of pores, generally contains 10% -- 30% of the pores.Compared with steel material, it is more prone to rust.So, what can we do to produce corrosion?How to prevent rust?Next, Ningbo powder metallurgy manufacturers to automotive gearbox iron - based powder metallurgy parts - synchronizer tooth hub as an example, for you to answer iron - based powder metallurgy parts rust prevention methods.
Rust Prevention Method for Production of Synchronizer Tooth Hub Based on Iron Powder Metallurgy Parts:
1, iron powder rust prevention: because the purchase of iron powder is a powdery solid object, there will be a lot of pores between the iron powder, such as into the wet air, in a very short time will rust and caking, resulting in the use of.Therefore, the purchase of iron powder is installed in a sealed thick plastic bag, at the same time the internal should be added with desiccant, external with thick woven bag packaging, convenient lifting.
2. Iron powder storage: when iron powder is stored in the warehouse, it must be in the first-in, first-out order.Iron powder in the mix, according to the purchase of packaging, packed in a thick plastic bag for completely sealed, in order to prevent oxidation of mixed iron powder;Placed on wooden pallets, the time between use is usually controlled within 3 days.
3, the use of iron powder pressing process: in the production process of pressing synchronizer tooth hub, the mixed iron powder should be used with the lead. It is not allowed to take out all the iron powder at one time because of the many tasks. The amount of each shift is used and received, and the amount of mixed iron powder between processes should be strictly controlled.
4. Synchronizer tooth hub pressing blank storage: Synchronizer tooth hub pressing blank, low strength, easy to damage, should be handled gently, placed in the plastic tray of the turnover car.Sintered and pressed blank within 48 hours, can not increase the amount of outer packaging protection, more than the time, with plastic film will be revolving car winding, sealing, to avoid wet air into.
5, sintered tooth hub sintered billet, using three different anti-rust test methods: after sintering, do not take anti-rust misapplication, finishing powder metallurgy tooth hub with 30# oil;After sintering, immediately dip in F901 film anti-rust oil, finishing powder metallurgy tooth hub with 30# oil;Burning combination, namely dip in WD40 anti-rust oil, finishing powder metallurgy tooth hub with 30# oil.
The above method of rust prevention of iron based powder metallurgy parts is introduced here. To find a simple and effective rust prevention measure of iron based powder metallurgy parts, so that in the production process, reduce the cost of rust prevention and improve the production efficiency.
Post time: Mar-10-2021