What’s the Difference Between Polypropylene Types?
网页2018年10月2日 · Paul Martin1. Polypropylene (PP) is a rigid crystalline thermoplastic used in everyday objects. There are various types of PP available: homopolymer, copolymer, impact, etc. Its mechanical ...
What’s the Difference Between the Sagittal, Coronal, and …
网页2015年2月2日 · The sagittal or lateral plane dives the body into left and right halves and is an x-z plane. Technically, the sagittal or median plane goes right through the middle between the body’s left and ...
How to Choose the Right Control Method for VFDs - Machine …
网页2014年10月23日 · Motors account for at least half of the energy consumed in the U.S. Selecting the right control method for an application lets the motor run most efficiently while maximizing torque and overall ...
Cast Iron and Wrought Iron: What’s the Difference?
网页2023年1月9日 · Wrought iron is softer and more ductile than cast iron. It is also highly malleable and can be heated, re-heated and worked into various shapes. In fact, it gets stronger the more it is worked ...
Basics of Aerospace Materials: Aluminum and Composites
网页2014年6月19日 · Basics of Aerospace Materials: Aluminum and Composites. Aluminum will likely be in airframes for another century, while composites represent the new material on the block. Two materials play major ...
What’s the Difference between AC, DC, and EC Motors?
网页2017年8月24日 · Consequently, AC motors are less efficient than DC motors. In fact, the DC motor is 30% more efficient than AC motors due to the secondary magnetic field being generated from the permanent magnets ...
Needle roller bearings: what they are; where they go; why you may …
网页2000年6月1日 · Needle roller bearings are the smallest and lightest of the roller bearing family. That gives them specific advantages for certain applications, particularly those requiring reduced weight and ...
What's the Difference Between Asynchronous and Synchronous …
网页2013年1月4日 · The difference between the two is called the slip. The amount of slip can vary. It depends principally on the load the motor drives, but also is affected by the resistance of the rotor circuit and ...
The basics of pneumatic control valves - Machine Design
网页2002年8月8日 · The basics of pneumatic control valves. Aug. 8, 2002. Directional valves such as Parker Hannifin's B3G-Series threeway (left) and four-way valves are often used to control pneumatic operations ...
The Basics of Shoulder Screws - Machine Design
网页2011年11月4日 · This differs from machine screws, where the same specification yields a screw with a threaded section ¼ in. in diameter and 1-in. long. The overall length of the shoulder screw includes the head ...
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