វីសក្បាលរន្ធ Hex A2-70 ជាកម្មសិទ្ធិរបស់គ្រួសារ "វីសរន្ធ Hex" ។ យោងទៅតាម "ការបញ្ជាក់របស់ Hex bolt" វាត្រូវនឹង ISO 4762 / DIN 912 ។ វាមានកម្លាំង tensile ≥700 N/mm² ធ្វើពីដែកអ៊ីណុក 18-8 ហើយនឹងមិនច្រេះក្នុងរយៈពេលយូរ សូម្បីតែនៅក្នុងបរិយាកាសសើម ឬអាហារ។

Shanghai Yijun Precision Technology Co., Ltd.

កម្មវិធីផលិតផល៖ អេឡិចត្រូនិភាពជាក់លាក់ ឧបករណ៍វេជ្ជសាស្ត្រ អេក្រង់ LED ថេប្លេត រ៉ូបូត ផ្នែកមេកានិច ការទំនាក់ទំនងចល័ត នាឡិកាវ៉ែនតា ការពាក់ឆ្លាតវៃ ឧបករណ៍ឧបករណ៍ យន្តហោះគ្មានមនុស្សបើក គ្រឿងបន្លាស់រថយន្ត

នៅក្នុងផ្ទាំងក្រណាត់ដ៏ស្មុគស្មាញនៃវិស្វកម្មទំនើប និងការផលិត សមាសធាតុមួយចំនួនតូចមាននៅគ្រប់ទីកន្លែង ប៉ុន្តែមិនមានតម្លៃទាបជាងវីសនោះទេ។ ក្នុងចំណោមពូជរាប់មិនអស់ដែលអាចរកបាន វីសក្បាលរន្ធគោលដប់ប្រាំមួយ A2-70 លេចធ្លោជាប៉ារ៉ាហ្គននៃភាពបត់បែន កម្លាំង និងធន់នឹងច្រេះ។ ប្រើក្នុងឧស្សាហកម្មចាប់ពីសមុទ្ររហូតដល់លំហអាកាស ឧបករណ៍ភ្ជាប់នេះបានក្លាយជាឧបករណ៍ដែលមិនអាចខ្វះបានសម្រាប់វិស្វករ សិប្បករ និងអ្នកបច្ចេកទេសដូចគ្នា។

ការរចនា "A2-70" គឺច្រើនជាងកូដចៃដន្យ - វារួមបញ្ចូលគុណលក្ខណៈសំខាន់ពីរ: ថ្នាក់សម្ភារៈនិងថ្នាក់កម្លាំង tensile ។  

A2 សំដៅលើដែកអ៊ីណុកថ្នាក់ទី 304 (UNS S30400) ដែលជាយ៉ាន់ស្ព័រដែលប្រើយ៉ាងទូលំទូលាយដែលគេស្គាល់សម្រាប់ភាពធន់នឹងការ corrosion ពិសេសរបស់វា។ ផ្សំឡើងពី 18-20% ក្រូមីញ៉ូម 8-10.5% នីកែល និងបរិមាណដាននៃម៉ង់ហ្គាណែស និងស៊ីលីកុន ដែកអ៊ីណុក A2 បង្កើតជាស្រទាប់អុកស៊ីដក្រូមីញ៉ូមអកម្មនៅលើផ្ទៃរបស់វានៅពេលដែលប៉ះពាល់នឹងអុកស៊ីសែន។ ស្រទាប់នេះដើរតួនាទីជារបាំងការពារប្រឆាំងនឹងច្រែះ សំណើម និងការរិចរិលគីមី ទោះបីជាមានស្នាមឆ្កូតក៏ដោយ ក៏ស្រទាប់នេះធ្វើកំណែទម្រង់យ៉ាងឆាប់រហ័សដើម្បីរក្សាការការពារ។ នីកែលបង្កើនភាពធន់ និងភាពតឹងណែន ធ្វើឱ្យដែកមិនសូវផុយ និងធន់នឹងបន្ទុកឆក់។  

លេខ 70 បង្ហាញពីកម្លាំង tensile អប្បបរមានៃវីសៈ 700 megapascals (MPa) ឬ 70 N/mm²។ នេះដាក់ A2-70 នៅក្នុងប្រភេទកម្លាំងមធ្យមខ្ពស់ ដែលសមរម្យសម្រាប់កម្មវិធីដែលទាមទារទាំងសមត្ថភាពផ្ទុក និងធន់នឹងច្រេះ។ សម្រាប់បរិបទ A2-50 (វ៉ារ្យ៉ង់កម្លាំងទាប) មានកម្លាំង tensile អប្បបរមា 500 MPa ខណៈពេលដែល A2-70 គឺល្អសម្រាប់សេណារីយ៉ូដែលមានបន្ទុកខ្ពស់ដូចជាការតភ្ជាប់រចនាសម្ព័ន្ធ ឬគ្រឿងចក្រធុនធ្ងន់។ លក្ខណៈសម្បត្តិមេកានិចបន្ថែមរួមមានកម្លាំងទិន្នផល ~ 450 MPa (ភាពតានតឹងដែលវីសចាប់ផ្តើមខូចជាអចិន្ត្រៃយ៍) និងការពន្លូត ~ 40% (សមត្ថភាពក្នុងការលាតសន្ធឹងមុនពេលបំបែក) ធ្វើឱ្យវាមានភាពធន់នឹងភាពតានតឹងថាមវន្ត។  

The hex socket head (also called Allen head) is a defining feature of this screw, offering distinct benefits over traditional slotted or Phillips heads:  

1. Positive Engagement & Torque Efficiency  

Unlike slotted heads, which rely on friction between the tool and slot edges, the hex socket uses a precise, hexagonal recess that locks the tool (Allen key or hex driver) in place. This positive engagement eliminates “cam-out”—a common issue where the tool slips out of the head when torque is applied, leading to stripped heads and damaged workpieces. The hex design transfers torque more efficiently, making it suitable for high-torque applications like automotive engine mounts or aerospace panel Fasteners.  

2. Flush & Aesthetic Fit  

The cylindrical head with a recessed socket allows the screw to sit flush or countersunk with the workpiece surface. This gives a clean, modern look—perfect for furniture, electronics, or architectural cladding where visible fasteners are undesirable. For example, a glass coffee table might use A2-70 hex socket screws to attach legs, creating a seamless, uncluttered design.  

3. Versatility in Tight Spaces  

The compact size of the hex socket head makes it ideal for installations in confined areas (e.g., under car dashboards or inside electronic devices). Allen keys and hex drivers are available in various lengths (including short “stubby” versions) to reach hard-to-access spots, while power tools with hex bits enable rapid assembly in mass production.  

4. Standardization  

Hex socket sizes are globally standardized (metric: M2 to M30; imperial: 1/16” to 3/8”), ensuring compatibility with widely available tools. This standardization reduces complexity in supply chains and makes it easy to find replacement parts or tools.  

The combination of corrosion resistance, strength, and design flexibility makes A2-70 hex socket screws suitable for diverse industries:  

Saltwater is one of the harshest environments for metal fasteners, but A2-70 screws thrive here. They are used in boat hulls, deck fittings (cleats, railings), engine components, and navigation equipment. For example, a sailboat’s winch mounts use A2-70 screws to withstand constant salt spray and heavy loads—their corrosion resistance ensures the winch remains secure for years.  

Under the hood, components like fuel injectors, sensor mounts, and exhaust system parts rely on A2-70 screws. The stainless steel resists corrosion from oil, coolant, and road salt, while the hex socket design allows for precise torque application. Electric vehicles (EVs) also use these screws for battery pack mounts—their non-magnetic properties (A2 stainless steel is weakly magnetic) prevent interference with sensitive electronics.  

Weight and reliability are critical in aviation. A2-70 screws are used in interior components (seat mounts, overhead bins) and exterior parts (panel fasteners) because they are lightweight (compared to carbon steel) yet strong enough to handle flight stresses. Their corrosion resistance is also vital for aircraft operating in humid or coastal regions.  

In humid or coastal buildings, A2-70 screws are used for structural connections (metal beam attachments, cladding) and finishing work (window frames, door hinges). They resist rust from rain and humidity, ensuring long-term structural integrity. For example, a high-rise building in a tropical city might use these screws to fasten aluminum cladding, as they prevent corrosion and maintain a clean aesthetic.  

Precision is key in electronics—A2-70 hex socket screws are used to assemble circuit boards, battery compartments, and smartphone casings. Their flush fit ensures no protruding parts interfere with device functionality. In medical devices, A2 stainless steel’s biocompatibility makes these screws ideal for surgical instruments (forceps, scalpels) and equipment mounts—they can be sterilized repeatedly without corroding.  

Modern furniture often uses hidden fasteners to achieve a minimalist look. A2-70 hex socket screws are perfect for this—they attach table legs, cabinet doors, and shelf brackets without being visible. For example, a modular sofa might use these screws to connect sections, allowing easy assembly and disassembly.  

To maximize the performance of A2-70 hex socket screws, follow these guidelines:  

1. Choose the Right Tool  

Use a correctly sized Allen key or hex driver—worn tools or mismatched sizes can strip the socket. For power tools, use high-quality hex bits to avoid deformation.  

2. Prepare the Workpiece  

Clean the surface to remove debris. For wood, drill a pilot hole slightly smaller than the screw shank to prevent splitting. For metal, tap threads (if using machine screws) to ensure proper engagement.  

3. Control Torque  

Over-tightening can strip the socket or damage threads; under-tightening leads to loosening. Use a torque wrench set to the recommended value (e.g., M6 screw: ~8–10 Nm). Refer to industry standards (like ISO 898-1) for torque specifications.  

4. Prevent Galling  

Stainless steel is prone to galling (metal-on-metal sticking). Apply an anti-seize compound (copper-based or graphite) to threads before installation to reduce friction and ease removal later.  

5. Ensure Adequate Thread Engagement  

The screw should engage with at least 1.5x its diameter in the workpiece (e.g., M8 screw: 12 mm engagement). This ensures maximum load-bearing capacity and prevents pull-out.  

ការថែទាំជាទៀងទាត់ពង្រីកអាយុកាលរបស់វីស A2-70៖

Inspect for Corrosion: For marine or coastal applications, check screws every 3–6 months for pitting or rust. Clean affected areas with a stainless steel brush and apply a corrosion inhibitor.  

Check Torque: Vibration (e.g., in cars or machinery) can loosen screws. Re-torque during routine maintenance using a torque wrench.  

Replace Damaged Screws: If the socket is stripped, use a screw extractor or super glue (applied to the Allen key) to remove it. Never reuse damaged screws—they may fail under load).  

The hex socket head screw A2-70 is more than just a fastener—it is a testament to engineering ingenuity. Its combination of corrosion resistance, strength, and design flexibility makes it indispensable across industries, from marine to medical. By understanding its properties, following installation best practices, and maintaining it properly, we can ensure this small but critical component continues to hold our world together reliably. As technology advances, the A2-70 screw will evolve to meet new challenges, solidifying its place as a cornerstone of modern manufacturing.