LEAD ALLOYING

Alloying is technique of combining or mixing two or more metals to make an entirely new metal, for example mixing copper and tin to create bronze. The process of Alloying is entirely opposite of Refining but Technically it has some resemblance as both the process are temperature based chemical process where in one process some elements are taken out at regular intervals and in other some elements are mixed.

The natural lubricity and wear resistance of Lead make the metal suitable, in alloys, for heavy-duty bearing applications such as railroad-car journal bearings and piston-engine crank bearings. Lead is also widely used as a constituent in solders. Most common solders are the Lead-tin alloys; melting temperature can be as low as 361°F.

In its unalloyed form (defined by ASTM B29 as 99.85% minimum Lead), Lead is soft and weak; it requires support for mechanical applications. This "chemical Lead" is used primarily in corrosive chemical-handling applications such as tank linings.

"Hard Lead" — Lead alloyed with 1 to 13% antimony — has sufficient tensile strength, fatigue resistance, and hardness for many mechanical applications. These alloys can be cast, rolled, or extruded and are especially suited for castings requiring good detail and moderate strength. Rolled antimonial alloys are harder and stronger than the cast alloys. Battery-plate Lead contains 7 to 12% antimony. Lead-antimony alloys with antimony contents of between 1 and 12% are used widely in the chemical industry for pumps and valves on chemical plants and in radiation shielding both for lining the walls of X-ray rooms and for bricks to house radioactive sources in the nuclear industry. The addition of antimony to Lead increases lead's hardness and therefore its resistance to physical damage without greatly reducing its corrosion resistance.

Lead-tin Alloy: A substantial proportion of solder is used in electrical or electronic assemblies. The advances made in these industries have made it essential to devise fast and highly automated methods of soldering. Printed circuit assemblies are now soldered by passing them across a standing wave of continuously circulating molten solder.

Calcium (0.03 to 0.12%) forms another series of mechanically suitable alloys with Lead. These alloys age harden naturally at room temperature — usually for 30 to 60 days — after being cast or worked. Properties of wrought Pb-Ca alloys are somewhat directional, being greater in the longitudinal direction. Uses include cable sheathing and grids in storage batteries.

Tin, added to Pb-Ca alloys in amounts to about 1.5%, raises tensile strength and stress-rupture resistance but increases aging time to 180 days. Tin is also used to reduce coefficient of friction for bearing applications. Higher tin-bearing alloys are primarily used in solders, which normally contain from 40 to 60% tin.

Lead alloys can be cast using most methods. Intricate details can be reproduced, and the surface can be readily painted. Lead alloys can be extruded into pipes, bars, channels, and rods.

In our process of Lead Alloying, we manufacture varieties of Lead Alloys based on the customer specifications. We are capable of manufacturing the following types:

Calcium – Lead Alloy
Antimony- Selenium Lead Alloy - 2.5
Antimony Lead Alloy - 3.0
Antimony Lead Alloy - 4.5
Copper - Lead Alloy
Tin - Lead Alloy
Many more….

This operation includes the addition of specific elements as per the requirement, namely: antimony, tin, arsenic, copper and iron. The Lead bullions from the Rotary furnaces can be charged directly into the Alloying kettle and melted. This is based on the specification of Lead bullion if it is close to the requirement of Lead Alloy; otherwise Pure Lead is used for making corresponding Lead Alloy.

Lead Oxide Barton Process Plant

We manufacture any shape or size that you need.
You can choose from our in-stock sizes or we can design and cast your requirement for you.
Our manufacturing plant is capable of expediting orders from a few pounds to hundreds of tons.
We will customize your alloyed requirements.
Let us take care of everything, from manufacturing to shipping.