The correct procedure to pour and cool the Babbitt material to sleeve bearing is needed due to a repetitive failure of the sleeve bearing babbitt material. The babbitt material doesn’t adhere to the shell after its pouring.
The key aspects for rebabbiting is the alloy and the cooling process. So the base metal should be threated to have a big roughness, second the babbit alloy should be hot enough to have a good penetration and finally the cooling process should be slow and uniform to avoid differential contraction between alloy and base metal
Thanks Carlos
It had been planned to reuse the Babbitt material which had been removed by melting in the old and expensive bearing shell.We succeeded to remove it (temp?). However ,the adherence to the shell was failed several times.So , could you help us to define the precise temperature levels for such melting , pouring process and the procedure for cooling (how ?and how long?). As well as we need to add more material to compensate for the lost Babbitt to get the same bearing clearance but we haven't any data about the Babbitt ASTM grade.
During the melting process some elements are eliminated by vapour, gas or ashes so the reused alloy has no the same properties of the requiered babbit. This could be the root cause, you are not using the correct alloy. The contain of Sb, Pb, Zn are important to the machnical and physical properties.
So, by haven't any data about the ASTM grade of the present Babbitt material, what can you suggest to select the correct and new Babbitt grade to sustain the old physical properties or any grade can be used without constraints?.
- Badges
- Science topic
- Similar topics
- Engineering
- Mechanical Engineering