News Center

What are the characteristics of pencils?

Release time:

2023-09-28 17:05

Pencil advantages: rich levels, can be in-depth, fine painting. Disadvantages: the picture is easy to reflective, easy to gray. The hardness mark of the pencil lead is generally "H" for hard pencils, "B" for soft pencils, "HB" for pencils with moderate hardness, and "F" for pencils with hardness between HB and H.

Pencil (Pencil), is a kind of pen used for writing and drawing sketch, has a history of more than four hundred years, among them, drawing pencil is divided into many types, it is divided into three stages of development, respectively, graphite, wooden penholder, hat pencil; in addition, its color has red and white, black and white, yellow and black stripes.

The hardness mark of the pencil lead is generally "H" for hard pencils, "B" for soft pencils, "HB" for pencils with moderate hardness, and "F" for pencils with hardness between HB and H. Arrangement (from soft to hard) 9B, 8B, 7B, 6B, 5B, 4B, 3B, 2B, B, HB, F, H, 2H, 3H, 4H, 5H, 6H, 7H, 8H, 9H, 10H and other hardness grades. The larger the number in front of H, the harder the lead core and the lighter the color. The larger the number in front of B, the softer the lead and the darker the color. The classification of pencil rods is based on the amount of graphite in the refill.

Lead core processing graphite lead core is prepared with graphite and clay according to a certain proportion. After mixing with kneading machine and three-roller machine, lead core with a certain specification size (e.g. HB ~ 3H lead core diameter is 1.80~2.10mm) is extruded by core pressing machine. After heating (50~150 ℃) drying and high temperature (800~1100 ℃) roasting, it has certain mechanical strength and hardness, finally, it is made by oil immersion treatment. The color lead core is processed similarly to the graphite lead core, but does not require sintering.

Key words:

Pencil

Previous Page

How are pencils classified?

None

Next Page

Related News

2023-09-20

How are pencils classified?

There are many kinds of pencils. Pencil specifications are usually represented by H and B. "H" is the beginning letter of English "Hard" (hard), which indicates the hardness of pencil lead. The larger the number in front of it, the harder the lead core is and the lighter the color is. "B" is the first letter of "Black" (black) in English, which represents the composition of graphite and indicates the soft quality of pencil lead and the obvious degree of writing. The larger the number in front of it, the thicker and darker the color.

2023-09-05

What are the characteristics of pencils?

Pencil advantages: rich levels, can be in-depth, fine painting. Disadvantages: the picture is easy to reflective, easy to gray. The hardness mark of the pencil lead is generally "H" for hard pencils, "B" for soft pencils, "HB" for pencils with moderate hardness, and "F" for pencils with hardness between HB and H.

2023-08-21

Usage of water soluble color pencil

Water-soluble colored pencils are also called watercolor pencils. However, it is difficult to draw the transparent texture of water like watercolor with water-soluble colored pencils. Therefore, it is most important to show the unique texture of water-soluble colored pencils as far as possible in painting, instead of replacing watercolor with water-soluble colored pencils.

2023-08-06

What are the classification of commonly used drawing pencils?

Pencil is a kind of pen used for writing and drawing sketch. It has a history of more than 400 years. Among them, pencil for painting is divided into many types: 2B pencil, charcoal pen, color pencil, etc. Let's see the difference today.