The Mechanical Products column mainly introduces information about mechanical products, including the latest mechanical research products and the latest research results obtained at home and abroad.

How to Hire Professional Mechanical Contractors

The world of professional mechanical contractors has changed over the years. Contractors are now becoming more specialized and have to specialize in certain types of work. If you are currently in the process of finding mechanical contractors, you might be wondering what types of tasks they can perform for you. There are many types of tasks that the mechanical contractors can perform. They can repair heating and cooling equipment, air conditioning systems, engines, boilers, generators, and even plumbing systems. All you need to do is let them know what type of work you are needing done so that they can narrow their scope of work to what you are needing.

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Introduction of Mechanical Taps

The tap is the mainstream processing tool used in tapping. So how to choose the tap? Today, I will share with you a tap selection guide to help you choose the right tap.

As a common tool for processing internal threads, taps can be divided into spiral flute taps, blade inclination taps, straight flute taps and pipe thread taps according to their shapes. According to the environment of use, they can be divided into hand taps and machine taps. Divided into metric, American, and British taps.

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Can wood be used for profiles?

Aluminum profiles have many advantages and can be used to build almost all kinds of structures. However, in some cases, non-metallic materials have more advantages. This is why item developed KH profiles.

This special profile is made of a composite of thermoplastic polypropylene and wood. The wood used is PEFC certified and comes from sustainable forest management.

More than 70% of the material of the profile KH is wood fiber, so it is much lighter than the aluminum profile (1.06 kg/m) and is more ergonomic. It also has a better carbon dioxide value (carbon dioxide equivalent: 3.6 kg), as well as ideal electrical insulation and electromagnetic wave permeability.

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Swiss Machine Tool Companies Ranking

Speaking of machine tools, you might think of German machine tools and Japanese machine tools. In fact, Swiss machine tools and even the entire Swiss manufacturing industry are at a good level.

TITANS, a CNC training center in the United States, walked into the Swiss precision machining workshop and shot the video. You can feel the charm of small parts. There are more than 4,000 parts on a plate less than the size of a palm.

The Swiss have a rigorous and conscientious “craftsman spirit” and a perseverance in craftsmanship. There are many invisible champions among Swiss machine tool companies. Let’s take a look at who are these machine tool companies? (names not listed in order):

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Tungsten steel grade YG naming rules

Tungsten steel: tungsten steel, cemented carbide, tungsten steel manufacturers, tungsten steel tools, tungsten steel molds, tungsten steel plates, tungsten steel round bars, tungsten steel round molds, YG15, YG8, YG20, YL80, YL90

The main components of tungsten-cobalt cemented carbide are tungsten carbide (WC) and binder cobalt (Co). 

The grade is composed of “YG” (the initials of the Chinese pinyin of “hard and cobalt”) and the percentage of average cobalt content.

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A brief history of mechanical development

The development of machinery can be divided into two parts in the 20th century.The following is a brief history of the development of machinery.

A brief history of mechanical development, before the 20th century

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The main classification of machinery

There are many types of machinery, which can be divided into various categories according to several different aspects, such as: according to function, it can be divided into power machinery, material handling machinery, crushing machinery, etc.; according to the service industry can be divided into agricultural machinery, mining machinery, textile machinery , Packaging machinery, etc.; according to the working principle can be divided into thermal machinery, fluid machinery, bionic machinery, etc.

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What is the machinery?

Machinery is a tool device that can help people reduce the difficulty of work or save effort. Items such as chopsticks, brooms, and tweezers can be called machinery. They are simple machinery. The complex machinery is composed of two or more simple machinery. These more complicated machines are usually called machines. From the point of view of structure and movement, there is no difference between mechanism and machine, which is generally called machine.

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