What Is a Fixed Appliance?

Equipment (Capital Items) refers to industrial products used by industrial buyers in the production and operation process, including fixed equipment and auxiliary equipment. Fixed equipment includes all buildings (factories, offices). Fixed equipment is the main equipment. The purchase or construction process goes through a long decision-making process. ^[1]

[shè bèi]

Equipment (Capital Items) refers to industrial products used by industrial buyers in the production and operation process, including fixed equipment and auxiliary equipment. Fixed equipment includes all buildings (factories, offices). Fixed equipment is the main equipment. The purchase or construction process goes through a long decision-making process. ^[1]

Equipment has

It refers to replacing technically or economically unsuitable equipment with new equipment or partially modifying the original equipment with advanced technology. Its contents include:

The service life of equipment has always been a stubborn problem that plagued the production of enterprises. The replacement of equipment is not a small expense. In fact, most of the equipment has a short service life. This is caused by man-made reasons. Good maintenance, it can be used for 2-3 years or even longer for some equipment in the same situation.

(1) Reasonable maintenance.

(2) Reasonable transformation of equipment.

(3) Economics of transformation.

hardware equipment

Special equipment: refers to boilers, pressure vessels (including gas cylinders), pressure pipes, elevators,

It refers to the economic evaluation conducted during the equipment purchase stage. First, several feasible equipment purchase schemes should be formed, and the optimal scheme should be selected through a comparative analysis of the schemes, so as to achieve the best economical equipment purchase.

There are two commonly used equipment evaluation methods:

1. Payback period method. That is, on the one hand, the investment costs of different equipment are calculated; on the other hand, the savings due to the use of new equipment can improve labor productivity, save energy consumption, and ensure product quality. The calculation formula is:

Equipment investment payback period (year) = equipment investment (yuan) / annual savings after adopting new equipment (yuan / year)

Under the same conditions, select the equipment according to the shortest payback period.

2. Cost exchange algorithm. First of all, understand the initial investment costs paid for different equipment at the time of purchase, and estimate the maintenance costs that must be paid each year after the different equipment is put into use. Due to the different conversion methods, they can be divided into:

(1) Present value method. Through the present value coefficient, the annual maintenance cost is converted into the initial investment cost, and the initial investment cost is summarized into the present value, and then the present value is compared to select the optimal equipment.

(2) Annual fee method. The initial investment fee for the one-time purchase of equipment is converted into an annual expenditure equivalent to the interest rate calculated based on compound interest. Then sum up the annual costs with the annual maintenance costs, compare and analyze the annual costs of different equipment, and choose the best equipment.

Establishing the coating production line: First of all, we must determine the production program, complete the process design and plan planning, and then we can design, manufacture and install non-standard equipment. Therefore, process design and plan planning are the basis for establishing a production line. Correct and reasonable routes will have a decisive impact on production operations and product quality. The contents of process design mainly include: pre-treatment methods for the surface coating quality of the workpiece, spraying method, process flow, coating performance, spraying environment, time, etc.

Purpose of painting: Through painting construction, the paint can form a solid and continuous coating on the surface of the object to be coated, exert its functions of decoration, protection and special functions.

Painting elements: The key of painting project is: painting process and equipment, painting materials, working environment, and painting management.

The quality of the coated material is the basic condition for obtaining a high-quality coating. Painting process, equipment, and painting environment are necessary conditions to give full play to the properties of painting materials, obtain high-quality coatings, reduce production costs and increase economic benefits. Painting management is an important condition for ensuring the implementation of the formulated process, ensuring the stability of painting quality, achieving the purpose of painting and the best economic benefits.

Main equipment for painting: The main equipment for painting are divided into surface pretreatment equipment before painting, painting equipment, coating film drying and curing equipment, mechanized conveying equipment, dust-free constant temperature and humidity air supply equipment, and other auxiliary equipment.

Coating surface pretreatment equipment, the purpose of pretreatment: to remove foreign objects such as scale, rust spots, grease, etc., to provide a good substrate suitable for coating requirements, such as phosphating, oxidation, passivation, to Ensure that the coating has good corrosion resistance and decorative properties. The pretreatment equipment is mainly divided into physical type and chemical type.

Physical formula:

Remove impurities attached to the surface of the steel sheet, and remove dirt such as grease with a thinner.

If there are sulfates or corrosive salts, wash them with water and blow them with compressed air.

On the steel plate pretreatment line, the oxide scale, rust and other impurities are removed by shot blasting or sand blasting, and then the surface of the steel is cleaned with a vacuum cleaner or purified compressed air.

Chemical formula:

Dipping type, spray type, dip-spray combination type, spray-dipping-spray combination type.

It is mainly composed of tank body, tank liquid heating system, ventilation system, tank liquid stirring system, phosphating slag removal system, and oil-water separation system. Among them, phosphating slag removal and oil-water separation devices are the key systems. There are commonly used methods such as sedimentation method, hydrocyclone separation method, inclined plate precipitation method, bag filter method, plate and frame filter press.

Oil-water separation mainly includes adsorption method, ultrafiltration method, hot oil separation method and centrifugation method.