Hot rolled water-cooled chiller

Hot rolling freezer

Advantages: It can destroy the casting structure of steel ingots, refine the grain size of steel, and eliminate defects in the microstructure, thereby making the steel structure dense and improving its mechanical properties. This improvement is mainly reflected in the rolling direction, so that the steel is no longer isotropic to a certain extent; Bubbles, cracks, and looseness formed during pouring can also be welded under high temperature and pressure.

Disadvantages: 1. After hot rolling, non-metallic inclusions (mainly sulfides and oxides, as well as silicates) inside the steel are compressed into thin sheets, resulting in delamination (interlayer) phenomenon. Layering greatly deteriorates the tensile properties of steel along the thickness direction, and there is a possibility of interlayer tearing during weld shrinkage. The local strain induced by weld shrinkage often reaches several times the yield point strain, much larger than the strain caused by load; 2. Residual stress caused by uneven cooling. Residual stress is the stress that self balances internally in the absence of external forces, and various hot-rolled steel sections have such residual stresses. Generally, the larger the cross-sectional size of the steel section, the greater the residual stress. Although residual stress is self balanced, it still has a certain impact on the performance of steel components under external forces. It may have adverse effects on deformation, stability, fatigue resistance, and other aspects.

Working principle of refrigeration unit: The compressor runs and sucks in low-pressure gaseous refrigerant from the evaporator. The temperature and pressure of the compressed refrigerant increase, and it enters the condenser. The refrigerant condenses into a liquid state in the condenser, and after drying and filtering, it enters the expansion valve. The refrigerant is throttled and depressurized by the expansion valve and fully liquefied. It enters the evaporator and boils and vaporizes in the evaporator, absorbing heat from the surrounding space to achieve this cooling effect.

Characteristics and functions of refrigeration unit

·The host is selected from the American Gulun brand compressor, with built-in safety protection, low noise, energy-saving and durable.

·The electrical part adopts original products from international brands such as LG, Fuji, Schneider, etc., which work stably and have a long service life.

·All stainless steel water pump, high flow rate, high efficiency, long-lasting durability.

·Equipped with imported precision digital temperature controller, it can accurately control the water temperature within ± 1 ℃ and set the temperature range

5 ℃ -35 ℃ can be adjusted freely.

·All stainless steel thick water tank evaporator with built-in automatic water replenishment device, easy and fast cleaning and maintenance.

·The condenser of the air-cooled chiller unit is fin type, with internally threaded copper pipes, designed reasonably, and has good heat transfer effect; The cooling system of the air-cooled unit is composed of fins and rows of copper tubes for heat dissipation. During manufacturing, a secondary flanged fin mechanical expansion process and advanced heat exchanger production line are used to ensure high quality and efficiency.

·The electrostatic spray coating shell has a European style design, which is beautiful and elegant. The outer panel adopts a quick disassembly and assembly form, which is convenient for use and maintenance.