Machine improvements

Brasses with up to 15 percent Zn are ductile but difficult to machine. Machinability improves with increasing zinc up to 36 percent Zn. Brasses with less than 20 percent Zn have corrosion resistance eqmvalent to that of copper but with better tensile strengths. Brasses with 20 to 40 percent Zn have lower corrosion resistance and are subject to dezincincation and stress-corrosion cracking, especially when ammonia is present. 

In support of the power recovery expander market for fluid catalytic cracking units in refineries, some turboexpander manufacturers have an ongoing program to improve the solid particle erosion characteristics of the machine. Improved erosion characteristics will result in longer blade life, less downtime, and consequently greater profits for the users. 

The shift from straight oils to synthetics has resulted mainly from machine improvement and increased restrictions on the disposal of oil and grease. Thus, metalworking fluids have been modified with water to minimize disposal problems and with chemicals to preserve the fluids and to accom modate higher speeds while increasing tool life. 

Magnesium Improves machinability improves resistance to corrosion by salt water and alkaline solutions... 

In the machine, improved by LainiS, and further perfected by Dailly, the wire sieves are retained, but the washing space is considerably extended and prolonged, though the quantity of pulp exhausted in a given time is increased. This 1b done by i... 

Calcium Carbonate, Calcium Silicate, Powdered Aluminium, Copper Alumina, Flint Powder, Carborundum, Silica, Molybdenum Disulphide Chopped Glass Mica, Silica, Powdered or flaked Glass Metallic Filler or Alumina Colloidal Silica, Bentonite Clay Improved Thermal Conductivity Improved Machinability Improved Abrasion Resistance Improved Impact Strength Improved Electrical Conductivity Improved Thixotropic Response... 

Use Electronics, xerographic plates, TV cameras, photocells, magnetic computer cores, solar batteries (rectifiers, relays), ceramics (colorant for glass), steel and copper (degasifier and machinability improver), rubber accelerator, catalyst, trace element in animal feeds. 

Paper dewatering is most important on the paper machine, where an aqueous slurry of pulp and additives are pressed into paper sheets. The water must be removed from the sheets by a combination of pressing, vacuum, and heat. The economy of the paper machine improves the faster it forms dry sheets of paper. However, speeding up the paper machine decreases the length of time available for dewatering. Often, the speed of the paper machine is limited by the rate at which water can be removed from the sheets. 

By additions of manganese and copper the work hardenability is reduced and machinability improved. Strength and hardness are increased by carbon and nitrogen, which however causes a poorer machinability. Machining parameters of stainless steels are given in Table la.9. 

SC Lyons. (Bird Machine) Improving kaolin and products thereof. US Patent 2524816, 21 February 1946... 

Lecithin One of the main phospholipids found in nature with important implications in metabolism and cell membranes. Lecithin is considered an important nutraceutical compound because it lowers blood cholesterol and is key to the synthesis of choline. Chemically, lecithin is the emulsifier phosphatidyl choline, and commercial lecithin consists of a mixture of different phospholipids such as phosphatidyl ethanol amine, phosphatidyl inositol, and phosphatidyl serine. Most commercial lecithin is obtained during the refining process of soybean oil. The egg yolk is also a rich source of lecithin. Lecithin is widely used in the baking, cookie, and wheat flour tortilla industries to improve dough machinability, improve texture, and retard staling. It is generally used from 0.1%-1%. 

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