What kind of pencil is real, how to pick a good pencil

1. Look at the product packaging. The packaging of the genuine product is printed with the company name, trademark pattern, model number, etc., and the printing is clear and complete. Inferior pencils are deformed because of their low cost, and the printed words or patterns on the outside of the packaging are deformed.

2. Look at the shape of the pencil. The cross-section of the genuine product is hexagonal, the plane is symmetrical, and the refill is intact in the center, and the paint color is consistent. The lead of a low-quality pencil is often eccentric.

3 look at the pencil wood. Genuine pencils are produced with red dyed pencil boards, and after disconnecting, the pigment dyed red is more sufficient. The paint of inferior pencils is soaked and disconnected, and it can be found that the inside is white.

4. Look at the pencil toner: If the seller has a sharpened sample, then we can look at the written toner, the genuine writing basically does not drop the lead end, and the writing is smooth, while the fake product falls off the end and the slag is serious.

You can do it on the back of your hand, and if it's a 2b, you're going to leave a trace of lead, and it's not too painful, not if it hurts.

The reason why pencils are called pencils: as early as the ancient Roman period, there were metal tubes with lead cores to write, and the lead core could scratch black lines, and people called this kind of pen pencils. By 1564, the English discovered a black ore, and when you lightly scratch it on something else, there is a dark black mark, and this ore can be easily cut and cut into long strips, which can be used for writing, and the effect is very good.

At that time, people thought that this ore was also lead ore, so the pen made from it was still called a pencil. Later, it became known that this ore was not lead ore at all, but graphite. Although it is known that pencils are not made of lead, the name pencil has been used, which is why pencils are called pencils.

Generally, the lead of the pencil is made of graphite powder and clay in proportion, squeezed out of a certain size by the core presser, and then dried and roasted. And Tan then clamped the wooden pen barrel to become a pencil, so the pencil is never Tong without lead, this is a matter of common sense, everyone should understand.

Pencils are common things in our lives and are used for writing, drawing, etc., so a good pencil is very important. But among the many pencils, how do you choose a good one? Let's take a closer look at it.

First of all, we need to understand the types of pencils, which are divided into three types: H, B, and HB with different hardness, where H series represents hardness, B series represents softness, and HB stands for moderate hardness and softness. Generally speaking, pencils with a softness between B4 and B8 are often recommended in drawing instruction books, while pencils with a hardness between H2 and H4 are recommended for writing assignments and writing that require clear handwriting.

Secondly, we need to observe the appearance of the pencil. A good pencil should look good, smooth, and feel comfortable in the hand. If there are too many cracks in the appearance, it is completely dull, and it feels rough to the touch, it may indicate that the quality of the pencil is not very good.

Again, we need to check the quality of the lead core. A good lead core should be smooth, not easy to break, not easy to fade after repeated rubbing, and the adhesion is sufficient. When choosing a pencil, you can pay attention to these aspects to ensure that you choose the best pencil.

Also, let's consider the material of the pencil. At present, there are three main types of pencils on the market: wood, metal, and plastic. Wooden pencils have a natural sense of beauty and are more comfortable to use, but they are susceptible to moisture and indentation, and are lighter.

Metal pencils are heavier, feel better, and have a longer service life, but ** is relatively high. Plastic pencils are lightweight and inexpensive, but they are usually not of good quality and are prone to damage.

Finally, we can consider the brand of pencil. Generally speaking, the quality of pencils of famous brands of Zhiwei is more reliable, such as Shidelou, Marco, Baile, etc. However, the brand cannot represent the quality of the pencil entirely, we also need to carefully observe and check.

In short, the main considerations for choosing a pencil are hardness, appearance, lead quality, material, and brand. I hope this article can be helpful to the majority of readers, so that you can choose a good pencil among the many pencils.

Pencil explanation.

pencil]

A wooden pole with a scribbled substance core inside, one end revealing a sharpened core, and the other end often has an eraser Detailed explanation (1).Refers to a pen dipped in lead powder to correct a typo. "Dongguan Hanji: The Biography of Cao Bao":

When you sleep, you carry a pencil, and when you go to bed, you recite a paperwork. "Anthology Ren Fang for Fan Shixing to set up a monument to the Emperor Enlightenment" People store oil, and the family carries a pencil. Li Zhouhan Note:

Oleogen, silk also; Lead, chalk also, so the book also. Song Song Qi's poem "Self-Litigation": "The pencil is hairy and bald, and the sideburns are sad and the snow is falling."

2).A pen that uses graphite or pigmented clay as a refill. "The Sea of Hatred" Chapter 7:

The foreigner took out a pencil of paper from his pocket and drew a lot of foreign characters. ”

Word Decomposition Explanation of Lead Lead (lead) Chizao Fan ā A metallic element that can be used as a material for resistance to sulfuric acid corrosion, protection against propylene radiation, batteries, etc. Its alloy can be used for lead words, bearings, cables, etc.: lead knife (refers to a blunt knife, metaphor for meager talent).

Shot. Refers to a writing instrument made of graphite, etc.: a pencil.

Explanation of pencil and wooden pen pen ǐ A tool for writing and drawing: a brush. Pen.

Pencil. Penholder. Pen gall.

The dots, rocks, horizontal, straight, apostrophe, and strokes that make up Chinese characters: strokes. Stroke order.

Pen-shaped yard hail. Pen Road. Write with a pen, write:

Penman. Ghostwrite. Pen tillage.

Pen talk. Clerical error. Translation.

Pen battles. Pseudonym. Writing and drawing.

Because the main component of pencil is graphite, in the fifteenth century, graphite ore was discovered, and people at that time did not know the composition of graphite, so they called graphite black lead. Around 1492, people in England began to use pens made of graphite, called pencils. It wasn't until 1779 that scientists learned that graphite was a form of carbon.

Pencil, is a kind of pen used for writing and painting sketches, has a history of more than 400 years, among them, the pencil of painting sketches is divided into many types, it is divided into three stages of development, divided into graphite, wooden pen barrel, capped pencil; In addition, its color has stripes such as red and white, black and white, yellow and black.

In 1564, in a place called Baroldale in England, a black mineral was discovered - graphite. Some local shepherds found that they could use graphite to mark their sheep. Inspired by this, graphite blocks were cut into small strips for writing and painting.

But graphite strips get your hands dirty easily and break easily. In 1761, the German chemist Faber solved this problem: he first ground graphite ore into powder, rinsed with water to remove impurities, and obtained pure graphite powder; Then, he mixed sulfur, antimony, rosin and other substances into the graphite powder; The mixture is then heated and solidified and pressed into the shape of a pen, the earliest form of the pencil.