Manufacturing Heat Treating News

The Vacuum Sintering Furnace Examined

Andrea Alborghetti, Technical Manager of TAV Vacuum Furnaces

 

Source: TAV: The Vacuum Furnaces Blog

Following up on the first installment of his series on “perfect vacuum sintering” (linked here), Andrea Alborghetti, technical manager of TAV Vacuum Furnaces and contributor to the company’s blog, provides an overview of the right insulation for a vacuum sintering furnace, an examination of hot zone design, the distribution of gas-flow, and the box for loading and unloading.

Read more: “Perfect Vacuum Sintering Step by Step #2”

The Vacuum Sintering Furnace Examined Read More »

Hoa Phat Orders 4 Blast Furnaces to Increase Production at Dung Quat Complex

Vietnamese steel producer Hoa Phat Steel has awarded a contract to an Italian steel production technology specialist for the design, supply, and supervision of four greenfield blast furnaces.

The project is part of the new Dung Quat iron and steel making complex committed to by Hoa Phat, which currently operates a 2 million metric ton per year (mtpy) iron and steel making plant in Hai Duong. The scope of the project also includes the hot blast mains, bustle mains, tuyere assemblies, level 2 automation systems and pulverized coal injection systems. The new plant will add 4 mtpy to Hoa Phat’s annual steelmaking capacity.

The four blast furnaces will have a 1080 m³ working volume and are designed for an annual production of 1 million tons of hot metal each. The furnaces will be supplied by Danieli Corus and equipped with the company’s high conductivity cooling and lining design based on copper plate coolers combined with graphite and silicon carbide refractories. The four furnaces will be completed and commissioned in sequence, with the fourth being scheduled for delivering the first hot metal in 2019.

Hoa Phat Orders 4 Blast Furnaces to Increase Production at Dung Quat Complex Read More »

Atmosphere Box Furnace Shipped to the Steel and Mining Industry

Lindberg/MPH announced the shipment of an electrically heated, rod over-bend atmosphere box furnace to the steel and mining industry. This is the second heat treating furnace of this kind that the customer has ordered from Lindberg/MPH. It is designed to meet the customer’s specific process based on the previous existing model they had ordered.

The atmosphere box furnace has work chamber dimensions of 15”W x 30”D x 12” H and a maximum temperature rating of 2000°F. Constructed with a gas tight steel shell made from continuous welded steel plate reinforced with structural steel members, the furnace door lifts up to provide access to the work chamber and is sealed by metal to metal contact to eliminate gasket wear and maintenance. A natural gas flame curtain is provided for the door area and is activated when the front door is opened to ignite exiting combustible atmosphere and minimize air infiltration back into the purge chamber.

“At Lindberg/MPH we pride ourselves on having the experience to design our equipment to meet the most stringent requirements. This customer’s process required the furnace to provide six different gas atmospheres. This is the second system we have shipped to them with this advanced atmosphere system.”– Kelley Shreve, Sales Representative

Lindberg/MPH atmosphere box furnaces feature:

  • Maximum gross load capacity is 465 lbs. at 2000°F
  • Six (6) different gas atmospheres including: nitrogen, hydrogen, endothermic, argon, CO and CO2
  • 460 volts, 3 phase, 3-wire, 60 Hertz
  • Door limit switch
  • HC900 Advanced Furnace Control System
  • Honeywell UDC 2500 Series Excess Temperature Controller
  • Electrical solenoid valves
  • Electronic flow control valves and moisture transducer
  • Immersion water heater

Atmosphere Box Furnace Shipped to the Steel and Mining Industry Read More »

Integrated Heat Treating Used in Making Steinway Pianos

BOTW-50w  Source:  Modern Machine Shop

“The company wanted to develop a more streamlined machining method, including integrating a heat-treat process that was currently being performed on secondary equipment. If this could be achieved, it hoped to bring this machining process back to the United States to its foundry location in Springfield, Ohio. This will reduce shipping costs, streamline production, and speed delivery to customers throughout North America.”

Read More:  How Steinway Machines Its Pianos by Russ Willcutt

Integrated Heat Treating Used in Making Steinway Pianos Read More »