The difference between group steel and real steel in classical Chinese

Tuangang: Shen Kuo's "Mengxi Pen Talk" contains: "The so-called iron and steel in the world are bent with soft iron, which is trapped in the middle of pig iron, sealed and refined in mud, and forged to make people, which is called Tuangang. "This technology first appeared in the Northern and Southern Dynasties.

Zhengang: refers to pure steel. Ming Li Shizhen "Compendium of Materia Medica, Jinshi Yi, Steel": "Real steel is refined iron, and it is not consumed until two catties, and pure steel is also." ”

Source: The so-called steel of wrought iron in the world is bent with soft iron, which is trapped in the middle of pig iron, sealed with mud, and forged into each other, which is called group steel, also known as steel filling. This is a pseudo-steel ear, temporarily fake pig iron is strong, and the second and third refining pig iron is self-ripe, and it is still soft iron.

However, those who do not think it is wrong in the world do not know the real steel ears. To send an envoy to the Cizhou forging mill, watch the iron, and know the real steel. Where there is steel in iron, if there is gluten in the face, and the soft face is exhausted, then the gluten is seen.

The same is true for steelmaking, but take refined iron, forge more than 100 fires, each forging is called, one forging is light, to the accumulation of forging and two catties are not reduced, then pure steel is also, although a hundred refining is not consumed. This is the essence of iron, its color is clear, and the polishing is dull and blue, and it is very different from the constant iron. There are also those who have been refined to the end and have no steel at all, all of which are produced by the earth.

Shen Kuo, "Mengxi Pen Talks on Forging Steel Method".

The so-called iron and steel in the world is coiled with wrought iron, and then the pig iron is embedded in the middle of it, and the furnace is sealed and smelted with mud, and the forging makes them penetrate into each other, which is called "group steel", also called "steel filling". This is just fake steel, which is temporarily made hard by pig iron, and after smelting, the pig iron becomes wrought iron, and the result is still wrought iron. But no one in the world thinks it's wrong, it's just because they don't know real steel.

When I went on an envoy, I went to the Cizhou iron-striking workshop to see the iron-making, and I got to know real steel. Where there is steel, iron is like gluten in the dough, and when the soft dough is washed away, gluten appears. Steelmaking is also like this, as long as the fine iron is selected to be forged more than 100 times, each forging 1 time is called 1 time, and the forging 1 time is lighter, until the number of forging catties is no longer reduced, that is pure steel.

Even if you forge it hundreds of times, it won't be consumed. This is the pure part of iron, its color is clear and polished, and it is a dull blue-black, which is obviously different from ordinary iron. There are also those that are forged to the end but cannot be made into steel at all, all because of the place of origin.

The origin is different. The refining method is different, the group steel temporarily makes it hard with the help of pig iron, and after smelting, the pig iron becomes wrought iron, and the obtained iron is still wrought iron; Real steel should be forged more than 100 times with fine iron.

The steel called wrought iron in the world is bent up with a soft iron plate, and then the pig iron is embedded in the middle of it, sealed and smelted with mud, and forged to make them penetrate into each other. This is just pseudo-steel, temporarily relying on pig iron to make it hard, and after two or three times of forging, pig iron naturally becomes wrought iron, which is still soft iron. However, no one in the world thinks it's wrong, it's just because they don't know real steel.

When I was on an envoy, I went to the Cizhou Wrought Iron Workshop and saw ironmaking, so I got to know real steel. Where there is steel, iron is like gluten in the dough, and when the soft dough is washed, the gluten appears. Steelmaking is also like this, only need to select refined iron, forge more than 100 times, weigh it once for each forging, and reduce it a little bit after forging once, until it is forged many times and the catties are no longer reduced, which is pure steel.

Even if you forge it 100 times, it won't be lost. This is the pure part of iron, its color is clear, and when polished, it shows a dull blue-black, which is very different from ordinary iron. There are also exercises for fine iron until it is exhausted and there is no steel at all, depending on where it is produced.

The difference is huge. The shuttlecock of electric steel is light and boring, but it is electroacoustic. If you are playing the real gang, it doesn't matter what you are used to. It's just that the shuttlecock of the hand-felt electric steel is boring, and the sound can't compare to the real rigid.

The difference between steel and iron is the carbon content, and the metallurgical industry is usually divided into ferrous metallurgical industry and non-ferrous metallurgical industry.

Steel is re-refined from pig iron, which accounts for 5 elements of the earth's crust, ranking fourth among the earth's materials. Iron is very reactive and easily combines with other substances.

1. Hand feel.

Electric Piano: Hand.

The sense of copying is relatively soft, although it is a full weight, for people who practice piano all year round, it is still very light, and the strength of each electric piano is the same, there is no difference, and there will not be much difference.

Piano: There are too many strength factors of the piano, which are closely related to the humidity, temperature and materials of the environment, even if it is a manufacturer, a brand, and a model of the piano, each one is different.

2. Handling and weight.

Electric piano: The electric piano takes P85 as an example, which is not heavy and does not require special handling personnel.

Piano: The piano is different, generally the moving company to move once is 500-800 yuan, usually 4 young men carry it is also very difficult.

3. Principle. Electric piano: The electric piano is an electronic component that senses sound.

Piano: The piano adopts mechanical transmission, and the strings are struck with a mallet to produce vibration, and the sound is made with air as the medium.

The differences are:

1. Principle: The electric piano is an electronic component that senses and emits sound. The piano is mechanically driven, and the strings are struck with a mallet to produce vibration, and air is used as the medium to make sound.

2. Sexuality: The volume and timbre of the piano have infinite changes, which can express the ever-changing rhythm more delicately. Due to the difference in sound production principles, electric pianos cannot change the timbre by touching the keys, cannot make the resonance effect after stepping down, and its volume is only 127 levels, which cannot make the timbre and volume as ever-changing like a real piano.

In the ability to express **, the electric piano cannot be compared to the real piano.

3. Convenience: The weight of an ordinary piano is generally about 200 kilograms, which is extremely inconvenient to move. The weight of an electric piano is generally only about a few dozen catties, which is very convenient to move.

4. Feel: The piano conveys the movement and strength of the player's fingers to the "hammer" of the piano through the internal mechanical transmission, so that the "hammer" produces the sound of the piano when the strings are struck again, and the mechanical transmission action of the electric piano is not, it can only be said to simulate the feel of the real piano as much as possible.

Difficulties in piano learning:

1. The first is to recognize the staff, including the recognition of speed and accuracy, as well as the ability to read the high and low clef at the same time.

2. Touch the keys, the transmission of finger power, and the most important thing is to learn to relax and not let the arms stiffen.

3. Emotion, understanding of the tune, knowing when to be light and heavy, learning how to use the touch keys to express sadness and joy.

4. Finger strength and speed exercises require a lot of time to practice mechanically.

5. Understand harmony and learn to create.

Electric steel keyboards are generally lighter than real steel keyboards, and there is no way around it. However, some electric steels do not have counterweights at all or have very poor counterweights, so they must not be bought. If you want to buy, buy a well-weighted one.

Yinfei's 8812 and 8826 are two representatives, and the keyboard of 8812 is relatively light, playing like an electronic piano; The 8826 is much heavier, close to real steel. Electric steels at this price point generally do not simulate the structure of an action, so it is impossible to have a response curve of real steel, as long as the weight can meet the requirements.

We recommend Yamaha's P120 or P140, which fits your budget and is the most recent piano feel (grand piano).

Casio's no...

Recommend Yamaha's P120 or P140, which fits your budget and is the most.

That's what you want first!