I. Materials and craftsmanship of sofa legs
Sofa legs are hardware accessories for various sofa furniture. The choice of materials and craftsmanship has an important impact on the quality, appearance and service life of the sofa. Commonly used materials and craftsmanship of sofa legs.

Material selection of sofa legs
(1) Solid wood
Solid wood is one of the commonly used materials for sofa legs. It has natural texture and color, giving people a rustic and natural feeling. Commonly used solid wood materials include oak, walnut, beech, etc. They have high hardness and durability and are suitable for making high-end and elegant furniture sofas.

(2) Artificial board
Artificial board is a kind of board made of wood as raw material. Commonly used artificial boards include particle board, medium-density fiberboard (MDF) and high-density fiberboard (HDF). Artificial board has uniform texture and stable performance, is not easy to deform and crack, and is suitable for making medium and low-end furniture sofas.

(3) Finishing material
The finishing material is used for sofa armrests and the surface of sofa legs. It can play a protective and decorative role. Commonly used finishing materials include solid wood veneer, artificial board veneer, veneer, paint, etc. Among them, solid wood veneer has natural texture and color, which can increase the texture and beauty of the sofa; artificial board veneer can imitate the texture and color of solid wood, and has better stability and economy.

Process selection
(1) Handmade
Handmade is a traditional manufacturing process that requires experienced craftsmen to perform fine processing and assembly. Generally, the handmade sofa legs are mainly made of wood. Handmade furniture has a unique style and texture, but the production cycle is long and the cost is high. It is suitable for making high-end and classical sofas.

(2) Automated mechanical production
Mechanical production is a large-scale manufacturing process that can mass-produce high-quality metal sofa legs. Automated mechanical production has a low cost and a short production cycle, which is suitable for making large-scale, mid-range sofas.

(3) Modular production
Modular production is an integrated manufacturing process that can combine different modules according to different needs to achieve rapid customization and flexible combination. Modular production has a moderate cost and a short production cycle, which is suitable for making medium-volume, mid-to-high-end sofas.

Metal sofa legs are a type of furniture that is mainly made of metal. The choice of materials and processes has an important impact on the quality, stability and aesthetics of the sofa.

Material selection
(1) Steel
Steel is one of the commonly used materials for metal sofas. It has the characteristics of high strength, corrosion resistance and stability. Commonly used steels include carbon steel and stainless steel. They can be formed and connected through cold bending, welding and other processing technologies, and are suitable for making various types of metal furniture.

(2) Aluminum
Aluminum is a lightweight, corrosion-resistant metal material with good thermal conductivity and plasticity. Aluminum can be formed and connected through extrusion, casting and other processing technologies, and is suitable for making lightweight and easy-to-move metal sofas.

(3) Iron art
Iron art is a metal artwork with iron as the main material, which has a unique shape and decorative effect. Iron art sofas can be formed and connected through forging, welding and other processing technologies, and are suitable for making metal sofas with classical and retro styles.
 

Process selection
(1) Welding
Welding is a commonly used metal connection process that can firmly connect metal parts. Common welding processes include arc welding, argon arc welding, etc., which can achieve the production of metal sofas of different shapes and sizes.

(2) Stamping
Stamping is a process of stamping metal materials into shape through molds and pressure, which can achieve mass production and high-efficiency production. Common stamping processes include shearing, punching, bending, etc., which are suitable for making flat or curved metal sofas.

(3) Polishing
Polishing is a process of processing the metal surface to make it smooth and bright. Common polishing processes include mechanical polishing, chemical polishing, etc., which can improve the beauty and texture of metal sofas.

The material and process selection of sofa legs should take into account factors such as environmental protection, quality and beauty, while the material and process selection of metal sofas should take into account the characteristics and functions of metals, as well as manufacturing costs and efficiency.

In the actual production process, it is necessary to select appropriate materials and processes according to different needs and requirements to produce high-quality and expected sofas.