Solar Atmospheres successfully vacuum hardens large H13 liner


Solar Atmospheres of Western PA successfully vacuum hardened one of the largest aluminum extrusion liners.

The massive H13 liner measured over 100 inches overall length and weighed 16,000 pounds. The liner was turned on Lake Park’s new large capacity lathe with 34-inch max diameter and 200-inch max length.

This H13 liner arrived at Solar Atmospheres of Western PA one month after the fastest cooling large vacuum furnace in the industry was completed and ready to run. This recently built Solar Manufacturing 10 bar vacuum furnace is equipped with a newly designed hot zone measuring 48” wide X 108” overall length. Additionally, the furnace has a 600 HP blower motor for increased cooling power. The critical cooling rate, to obtain optimum properties for H13 hot worked tool steel, was achieved as evidenced in the as-quenched hardness of HRC 54-55. The part was then double tempered to the customer’s specification of HRC 46 to 48.

“This large, rapid cooling vacuum furnace provides us continued diversification to our vacuum heat-treating repertoire and capabilities,” said Bob Hill, president of Solar Atmospheres in Western PA. “We’re proud of this partnership with Lake Park Tool and Machine and to assist our customers in vacuum heat treating one of the largest air hardening dies that I have personally heat treated over my 40-year career.”