河北邯郸空压机知名厂

1、木材的各向异性，这是木材作为一种天然材料的自带属性。从科学角度来说，由于木材的天然性，使得构成它细胞的物质排列方向十分随机，使木材在不同方向上，随着外界条件的变化，产生不同程度的收缩，进而会产生开裂等现象。用人话说，就是木材各个方向材性不同。

1, the anisotropy of wood, which is the inherent property of wood as a natural material. From a scientific point of view, due to the natural nature of wood, the material arrangement of its cells is very random, making wood in different directions, with the change of the external conditions, resulting in different degrees of shrinkage, and then the phenomenon of cracking. In other words, wood is different in all directions.

2、木材含水率即木材中水分含量的多少，是木材中水分含量与木材质量之比的百分数，用MC表示。木材本身的含水率和门的开裂密切相关，其含水率可通过干燥和测量来进行控制，常用以下公式计算：

2, wood moisture content, that is, the number of moisture content in wood is the percentage of wood moisture content and wood quality ratio, expressed in MC. The moisture content of wood is closely related to the cracking of door. Its moisture content can be controlled by drying and measuring.

公式中，G湿是湿木材的质量/g；G干是绝干木材的质量/g。

In the formula, G wet is the mass /g of wet wood, and G dry is the quality /g of absolute dry wood.

3、纤维饱和点，严肃一点来说，当木材中的自由水完全蒸发，而细胞壁中吸着水的量处于饱和状态时的含水率，称之为纤维饱和点(Fiber saturation point，简称FSP)。通俗一点来说，木材中的含水率高于这个点，则木材形状不会发生很大改变；而当木材含水率低于这个点，则木材形状会随外界变化产生较大改变。

3, fiber saturation point, seriously, when the free water in the wood is completely evaporated, and the water content in the cell wall is saturated when the amount of water is saturated, called the fiber saturation point (Fiber saturation point, for short). In general, the water content in wood is higher than that of this point, and the shape of wood will not change greatly; and when the moisture content of wood is lower than this point, the shape of wood will change with the change of the outside world.

▼ 下图对木材中水分的存在状态和位置有比较直观的说明。

The size of wood moisture in the existing state and position of a more intuitive description.

▼ 这样一张表来进行各地区平衡含水率的查询。

We like a table to check moisture balance in different regions.

结论就是这么DUANG~~~出来了，简单点说，其实还是水和力的问题。

The conclusion is that DUANG~~~ is coming out. In short, it's actually water and power.

02

02

“裂”的自然

The nature of "split"

       水：在接触实木门的时候，由于木材材性、使用环境、使用习惯等不注意，很容易使门中木材本身的含水率和纤维受力情况发生变化。

When touching the solid wood door, it is easy to change the water content of the wood and the force of the fiber in the door because of the wood property, the use environment, the use habit and so on.

比如，阳光的过度照射、屋子里过于干燥的空气、门表面长时间浸泡酸/碱等各种液体、暴力运输……都会使门具备开裂的“潜质”。

For example, excessive exposure of sunlight, too dry air in the house, long time immersion in door and surface, and all kinds of liquids such as acid and alkali, and violent transportation. The door will have a cracked "latent".

面对着门的开裂，商家们能做的就是把好质量的关、做好门保养宣传。

Facing the door's cracking, businesses can do well in quality control and door maintenance.

03

03

“裂”的真实

The truth of "crack"

       这就是为什么实木门的商家都要来上这么一句话“实木门的木材开裂是一种天然属性”。因为，这真的是一种天然属性。

This is why a solid wood door merchant must come to such a saying: "wood cracking of solid wood doors is a natural attribute". Because, this is really a natural attribute.