The main purpose and scope of application of the shackle: The shackle can be used for the end fittings of the rigging, and is directly connected to the object to be lifted during the lifting operation. Shackles can be used between rigging and end fittings, only for connection. When the rigging is used in conjunction with the beam, the shackle can be used to connect the rigging with the lug plate at the lower part of the beam instead of the lifting ring, which is convenient for installation and disassembly. Shackles are widely used connection tools in lifting operations, and are mainly used for connection parts that are often installed and disassembled in hoisting. D-type shackle is mainly used for single-limb rigging; B-type shackle is mainly used for multi-limb rigging. The company can design and produce other types of stainless steel products according to customer requirements. The company has a number of professional precision casting production lines, CNC machining lines, and machining centers. It also owns advanced spectral analysis quality inspection equipment to ensure material quality. High-pressure pressure test leak detection equipment, air tightness detection equipment, angle test bench, national standard tooth gauge, ring gauge and optical gauge, solid melting furnace and other equipment, technical capabilities. Fangzheng Stainless Steel Rigging sincerely invites friends from all over the world to visit and negotiate with our company, and jointly develop the world rigging, marine hardware accessories, stainless steel pipe valve parts, and auto parts market. This product is made of stainless steel 304, 316.
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Wood drying directly affects the life of wooden doors
Wood drying is a critical process in the production of high-quality wooden products. Traditional wood drying methods rely on heat being gradually introduced from the surface inward, which can be slow and less efficient. In contrast, microwave drying directly targets the entire piece of wood, allowing moisture and the wood itself to absorb microwave energy and heat up. This method causes water molecules within the wood to vibrate rapidly due to the alternating electromagnetic field, generating friction and heat that raises the overall temperature of the wood. The result is a much faster drying process compared to conventional methods like natural drying, steam drying, or infrared drying.
When using microwaves for wood drying, it's essential to adjust the temperature according to the type of wood being used. If the temperature is too high, internal pressure may increase, leading to cracks within the wood. On the other hand, if the temperature is too low, the drying process becomes inefficient and time-consuming. Once the internal temperature exceeds 100°C, the water vapor pressure inside the wood increases, accelerating the movement of moisture toward the surface. This makes microwave drying significantly more efficient than traditional techniques.
In modern homes, solid wood staircases are popular choices, especially among those looking for premium, high-end options. However, many consumers focus only on style and price when purchasing wooden stairs, often overlooking important quality factors such as the wood’s moisture content and the drying process. Proper drying is crucial to prevent warping, cracking, and reduce the risk of structural issues over time.
Many homeowners have experienced problems with their solid wood flooring or furniture after just a year of use, such as cracking or warping. These issues are often caused by inadequate drying during the manufacturing process. Not only solid wood flooring, but also solid wood doors, windows, and stairs can suffer from similar problems if the wood isn't properly dried before being used.
To ensure long-lasting quality, most medium and large manufacturers dry wood before producing solid wood doors, stairs, and other furniture. This involves following strict procedures and using specialized equipment. There are two common methods of wood drying in the market: earth kiln drying and a two-step process involving steam and microwave drying.
The first method, earth kiln drying, is commonly used by small workshops due to its lower cost. However, this technique often results in uneven drying, with some parts of the wood being over-dried while others remain moist. This can lead to serious quality issues, including cracking and reduced lifespan of the product.
The second method is more advanced. It begins with steam drying, where moisture is removed from the outside to the inside, typically taking 30–40 days. After that, the wood is left in storage for 3–4 months to acclimate to external conditions. Finally, a second round of microwave drying is applied to ensure even and thorough drying. This method is more expensive, costing around 2,000 yuan per unit, but it significantly improves the quality and durability of the wood. The microwave drying process takes about 24 hours and helps eliminate internal stress, preventing cracks and deformation.
Due to the high cost of microwave drying equipment—around 1.65 million per unit—only larger manufacturers can afford to use this technology. As a result, small workshops tend to have shorter production cycles and lower prices, but at the expense of quality. When choosing wooden home furnishings, it's wise to opt for well-established brands with strong financial backing and proven quality control systems. These companies are more likely to invest in proper drying techniques, ensuring better performance and longevity of your wooden products.
Choosing the right manufacturer not only affects the aesthetics of your home but also plays a key role in the safety and comfort of your family. Always pay attention to the drying process and choose reliable producers to avoid costly and frustrating issues down the line.