Furniture purchase tips

1. Classification of furniture

Solid wood furniture

Explanation of terms: The main body of the furniture is made of natural wood, and only a small amount of plywood and other auxiliary materials are called solid wood furniture. So what is the main body of furniture? Cabinet doors, side panels, table panels, side panels, feet, bed backs, side panels, feet, these are the main body of furniture. And the bottom plates of some cabinets, drawer bottom plates and the like do not belong to the main body.

The characteristics of solid wood furniture: generally mortise structure, that is, fixed structure.

Some misunderstandings of solid wood furniture: 1. The veneer furniture is called solid wood furniture. In fact, this type of furniture should belong to panel furniture. The definition of solid wood furniture is natural wood, as long as there is artificially synthesized furniture in the main body of the furniture, it is not classified as solid wood furniture.

The common technique for selling aunts is to tell you that the panel is under blockboard, and then that the blockboard is solid wood, and then call this kind of furniture solid wood furniture. If you don't pay attention, you will be blinded. Blockboard is plywood and does not belong to the realm of solid wood. Although it is made of solid wood, the difference between the two is just like the fact that flour cannot be called rice.

2. Some specially treated paper veneer furniture is called solid wood furniture. The surface of some paper veneer furniture is almost exactly the same as that of solid wood furniture, especially the classic brands of Wenzhou, which are hardly seen by furniture experts. The sales aunt is fake. You bought it and made the money, and the one who lost money is yours.


3. Some solid wood furniture is called solid wood furniture. The door panels of some furniture are all solid wood, but the side panels are not, but the sales aunts are collectively referred to as solid wood. In fact, this type of furniture should be between plate and solid wood furniture. It should be called semi-solid wood furniture. Although it is like a person, it cannot be called a person, roaring.

plate-type furniture

Explanation of terms: The main parts of the furniture are all made of artificial board, plywood, particle board, blockboard, medium density fiberboard, etc. with surface decoration.

The characteristics of panel furniture: all kinds of metal connectors are used to connect the panels and columns. Horizontal and vertical, lack of level changes. According to the difference of furniture surface veneer, it is divided into wood veneer, paper veneer, melamine veneer and paint surface furniture. Its service life is 5 to 10 years, suitable for young people to use, and it is also the most popular furniture now. Because there are too many changes, I will open a detailed article to answer your questions.


sofa

The sofa is in English: a transliteration of "sofa" . According to the different materials, there are cloth sofa, leather sofa, artificial leather sofa, rattan sofa, etc. Generally the first two are commonly used in the family.


Metal furniture

Furniture mainly made of metal such as steel pipes and supplemented by auxiliary materials such as metal such as steel plates or artificial boards. Fewer homes are more outdoor, and iron furniture is one of the best.



Second, how to choose solid wood furniture

1 . Determine whether the furniture is really made of solid wood

Mainly watch door panels and side panels

Tips: Scarring, wood grain and cross section.

Scarring: Look at the location of the scarred side, and then look for the corresponding pattern on the other side.

Wood grain: The appearance looks like a pattern, then the position corresponding to this pattern change, look at the corresponding pattern on the back of the cabinet door, if it corresponds well, it is pure solid wood.

Section: The color of the section is darker than the panel, and it can be seen that it is made of a whole piece of wood.

2. Look at the tree species

What kind of wood is made of solid wood, which directly affects the price and quality. From the cheapest pine and oak wood, to the expensive mahogany, the price difference is dozens of times. Therefore, do not consider tree species because it is solid wood. After all, solid wood like pine wood is much worse than man-made board in addition to environmental protection.

3. Determine the origin of solid wood manufacturers

Pay special attention to the origin of solid wood furniture and wood manufacturers. There is an old saying, " Solid wood is no more than the Yangtze River " , which means that solid wood furniture produced in the south will be prone to cracking, deformation and other problems due to the influence of climate on the moisture content. So when you buy, you have to look at the place of origin.

4. Observe the wood for defects.

Several defects of solid wood: cracking, scarring, insect eyes, mildew

Carefully check the details when buying.

Cracking: Naturally you can't buy it.

Scarring: If there is a scar on the front and the same spot on the back, this scar is basically a dead knot. It will fall off after a long time, so furniture with this defect can never be bought.

Insect eye: Although many furniture are claimed to be dried and degreased, but you think about China being so large, so many furniture factories, and so weak national management, at least 50 % off credibility . In addition to those Western-style solid wood furniture, deliberately engraved with insect eyes, do not buy other .

Mildew: It means that the wood is green and has water marks. Although the sales aunt will tell you that it has been dried, no problem. But think about it, can you still eat moldy bread after reprocessing? The performance of moldy wood is quite different from before.

5. See the connection of various parts of the furniture

Good solid wood furniture is connected by means such as tongue and groove. In places where the local load is relatively large, it is also reinforced by means such as screws and protective blocks. If the solid wood furniture you see is all fixed by screws, the firmness of this type of furniture is not high. To judge the firmness of furniture, you can judge by shaking the furniture to feel its stability.

6. Look at the paint quality on the furniture surface

The most feared thing about solid wood furniture is water and fire. Needless to say, fire, there is an old saying about fear of water: dry for thousands of years, wet for thousands of years, dry and wet can not pass the new year. It is about the fear of water in solid wood. The surface of the furniture is especially the most effective way to prevent moisture from invading the furniture. Therefore, you should carefully check whether the furniture has not been painted, the key points: the top and bottom of the cabinet door panel, the interior of the large cabinet. Touch the painted surface with your hands to see if there are any burrs or bubbles.

7. Look at the details of the furniture drawer.

The drawer should be solid and firm, and tighten the screws inside. May wish to pull open the drawer, movable table, cabinet door and other parts to ensure that it can be used freely and connected correctly. The drawer bottom plate has a certain thickness, and the drawer bottom plate adopts a groove connection instead of a nail connection.

3. How to choose panel furniture

1. Smell the smell

Panel furniture is made of artificial board, so no matter what, it will inevitably have the smell of formaldehyde or paint, so you can initially judge whether the furniture is worth buying through the nose.

If you can smell the pungent smell when you walk into the furniture store, then you do n’t need to look at this furniture anymore. Even the kind of furniture you produce cannot guarantee environmental protection. The furniture you send to your home will definitely have more problems.

Open the cupboard, pull the drawer, and observe the details of the furniture, but also give full play to the function of the nose. The smell is the furniture that cannot be bought, even if the style is attractive, the price is favorable, you ca n’t buy it.

2. See furniture details

The urethane furniture mainly depends on the edge banding. If there is an obvious edge burst at the edge banding and plate interface, it means that the processing technology of the furniture factory is obviously not enough.

The veneer furniture mainly depends on the veneer's grain, color and corners. If the texture is not deep and delicate, it means that the thickness of the veneer used is not enough. If the color is unnatural, there are dark and light, indicating that the paint process is not enough. If there are peeling or warping at the corners, it means that the processing technology is not enough, and these furniture can not be purchased

Looking at the connection between the drawer and the hardware, you can also see the quality of the furniture. Panel furniture is connected by hardware. If the grade of hardware in a furniture is not enough, or it is simply fixed with nails or the like, it means that the furniture manufacturer is not strong enough to grasp the details.

3. Touch

Is the furniture surface smooth and free of burrs? Does it feel good?

4. Quantity:

  Use box rulers to measure the main functional dimensions of furniture.

( 1 ) The depth of the bedroom cabinet hanging space ≥ 530mm .

( 2 ) The height of the table is 680 , 700 , 720 , 740 , 760mm .

(3) high clearance intermediate word table ≥580mm, intermediate clearance width ≥520mm.

( 4 ) The bedroom cabinet has a high hanging space, long coat ≥1400mm , short coat ≥900mm .

( 5 ) The height of the seat surface of the chair and stool is 400 , 420 and 440mm .

( 6 ) The clothes rail is centered before and after, and keeps level.

5. Listen

Open the cabinet door, feel smooth, no sound. Pull the drawer without blocking.

6. Inquire

Ask about the brand of furniture sheet, quality level, paint brand, hardware brand

Check the manufacturer

Check the wood-based furniture quality supervision and inspection station wood-based panel test report and wood-based panel furniture test report

Use techniques:

( 1 ) Ask the clerk, but the accuracy of the information is not high, after all, the clerk's understanding of furniture may not be higher than yours .

( 2 ) Ask the industry insider on the website.

( 3 ) Search, the search method depends on the search help. Fourth, how to choose a sofa

1. Look at the quality of the frame

Use both hands to shake the whole sofa back and forth, left and right, and shake it repeatedly. If it feels better, the frame is firm. Discuss with the sales staff again, and uncover the corner of the underside of the seat to see if it is made of smooth hard wood with no decay, no worms, no scars, no bark or wood wool, and the joint between the material and the material The nails are nailed, but the mortises or cuts are used to bite each other, and then glued firmly, there is no problem.

2. Look at the quality of the inner cushion

Nowadays, the bottom surfaces of high-end sofa seats and backs are mostly made of nylon belt and snake spring cross-mesh structure, and the top is layered with high-elastic foam, sprayed cotton and light body foam. This cushion has good rebound and comfortable sitting. Most of the mid-range sofas are made of glued fiberboard as the base and back of the floor, and are layered with medium-density foam and sprayed cotton. The cushion feels harder and has less resilience.

3. Look at the fabric and sewing

Buy leather sofa to choose leather. Leather sofas are divided into full-leather sofas and half-leather sofas. Each set of full-leather sofas consumes the equivalent of 10 cows of cowhide leather. They are of high value, have good ventilation and environmental protection performance, and are widely used in developed countries such as Europe and the United States. The semi-leather sofa replaces cowhide with PU leather or artificial leather PVC on the back, bottom and other hidden parts of the sofa , but the parts directly contacted by the human body are still high-value cowhide, which reduces the cost of the sofa and is more economical. The leather for the sofa is divided into yellow leather and buffalo leather, which is divided into the first layer leather, the second layer leather and the three layer leather according to the number of layers; according to the origin, it is divided into domestic leather and imported leather. The imported leather is the best quality yellow cowhide imported from Italy and Germany. It meets strict environmental protection requirements. It has high color fastness, good elasticity and breathability, high mechanical strength, especially high tear strength and tensile strength. The high-quality leather sofa must be the first layer of yellow leather.

When purchasing a leather sofa, the leather surface should be rich and shiny, without scars, and the texture is fine. Hold it with your fingertips and drag it upwards. It should be flexible and powerful. After wrinkling, the wrinkles can disappear or not obvious after sitting The leather is of good quality.

When choosing a fabric sofa, it should be noted that the seat and back cover of the sofa should be a loop structure. The high-end fabric sofa is generally lined with cotton cloth, and other easily stained parts should be replaced. The sofa fabric should be relatively thick, with a gram weight of more than 300 grams / square meter, which is more durable, and it must be ensured that the surface is not balled after 12,000 times of friction . Sofa fabrics can be divided into domestic and imported. Special sofa fabrics produced by European and American professional manufacturers have excellent quality, minimal color difference, high color fastness, and no weft fabric. Especially for some high-end fabrics to improve anti-fouling ability, the surface Special treatment. Imported high-grade fabrics also have antistatic, flame retardant and other functions. To buy a fabric sofa, choose a fine and smooth fabric warp and weft, no jump wire, no exposed joints, and a stretchy feel. Sewing depends on whether the stitches are even and straight, use both hands to squeeze the seam to see if it is tight, and whether the edges of the teeth are round and full.

4. Look at the cloth

The wrapper depends on whether the fabric is tightly covered with the inner filler and whether it is flat and neat, especially the transition between the two armrests and the seat and the back should be natural and free of creases. If it is a round and semi-circular handrail, it depends on whether the arc is smooth and smooth, full and beautiful. The fabric of the floral pattern or checkered pattern depends on whether the flower shape at the splice is consistent, whether the checkered pattern is horizontal or vertical, and there is no inclination or distortion. Finally, sit down and give it a try, and feel whether the inclination of the seat and the back or the curvature of the back seat are close to the waist, back, hip and leg bends; whether the height of the pillow and the back is appropriate, and whether the height of the armrest is the same The arms are naturally stretched out and open to fit normally; whether the feeling of sitting is comfortable and whether it is comfortable when standing up. After standing up, look again at the hips, backrests, and armrests to see if there are pleats that are noticeably slack and will not recover for a long time.

5. Look at the choice of foam sponge

High-end sofa cushions should use high-elastic foam sponges with a density of more than 30 kg / m3, and back cushions should use high-elastic foam sponges with a density of 25 kg / m3 or more. In order to improve the comfort of sitting and lying, some foams are soft-treated on the premise of not reducing the density, and some are provided with vertical springs in the cushions, so that the sofa has higher resilience and anti-aging performance. Under normal circumstances, it is best for the human body to sit down on the sofa cushion with a depression of about 10 cm .

5. How to buy metal furniture

Nowadays, more and more people are locking their eyes on metal furniture. Its unique form and avant-garde style can show a strong personal style. Moreover, it has the advantages of firm structure, durability, convenient handling, etc. and is very popular. When buying metal furniture, pay attention to the details and pay attention to the following aspects:

1. Pay attention to the appearance of the furniture. There are generally two types of metal furniture on the market.

(1) For electroplated furniture, the requirements for it should be that the electroplated layer has no foam, no skin, no yellowing, and no scratches on the surface.

(2) For paint-baked furniture, it is necessary to ensure that the paint film does not fall off, no wrinkle skin, no pimples, no bumps and scratches.

2. When purchasing folding bed and folding sofa mainly made of steel pipe, pay attention to that the pipe wall of the steel pipe is not allowed to have cracks, open welding, no obvious wrinkles at the bend, and there should be no edges, burrs and corners at the pipe mouth.

   3. The riveting of metal parts and steel pipes should be firm, and no looseness can occur. The rivet cap should be smooth and flat, free of burrs and file cuts.

   4. Before buying metal furniture, you must open the trial and check whether the four-legged landing is stable and consistent. The folding product must ensure flexible folding, but it cannot be folded by itself.

The above information hopes to bring you some help when buying furniture.

Plano Concave Lens

A plano concave lens is an optical lens with one concave surface and one plane surface. It has a negative focal length, and can be used for light projection, beam expansion, or to increase focal length of an optical system.
Plano-concave lenses diverge a collimated beam from a virtual focus and are commonly used in Galilean-type beam expanders. Given their negative focal length and negative spherical aberration, plano-concave lenses can be used to balance out aberrations of other lenses in the system. Realpoo Optics provides plano-concave lenses fabricated from N-BK7, N-SF11, UV-fused silica, calcium fluoride, and zinc selenide etc.


Plano Concave Lens,Plano Concave Lenses,Lenses Optical,Microscopy Optics

Changchun Realpoo Photoelectric Co., Ltd. , https://www.optics-realpoo.com