Swaging
Swaging is a hammering or squeezing method that employs radial or rotary dies that rapidly impact the workpiece, either while it rotates or moves forward. Swaging can be hot or cold, depending on the metal and the part. It’s often used to taper, reduce, or expand the ends of rods or tubes. It’s mostly […]
galvanized steel colors
Here’s a detailed explanation of galvanized steel colors, presented entirely: Core Principle: Galvanizing involves coating steel with molten zinc. The base color of pure zinc is silvery-gray. However, temporary interference colors often appear due to light interacting with the crystallizing zinc surface. The Colors of Galvanized Steel: Silvery-Gray (The Permanent Base Color): Description: Bright, metallic, shiny gray. This is the fundamental color […]
Cold Forging
Cold forging uses strong pressure to shape metal at room temperature or below, which is significantly below the metal’s recrystallization temperature. Common techniques used in this process include: Coining: Presses letters, logos, or other fine details into the surface of the metal. Cold Heading: Forms heads on nails, bolts, and pins without cutting or […]
Metal Tapping Process
Here’s a comprehensive explanation of the metal tapping process: Tapping Metal Components: A Step-by-Step Guide Tapping is the machining process of cutting internal threads into a pre-drilled hole in a metal workpiece using a tool called a tap. It’s essential for creating threaded holes to accept screws, bolts, or studs. Key Components & Tools: Tap: A hardened, […]
Warm Forging
This process is done at intermediate temperatures between hot and cold forging. Warm forging offers a smoother finish than hot forging, but it requires more force, and it also wears out tools faster. Temperature control is also more critical. Warm forging allows for better control of size and shape than hot forging. While it […]
Common Rubber Materials
Here’s an overview of common rubber materials, categorized by type and described: Natural Rubber (NR): Source: Derived from the latex of the Hevea brasiliensis tree. Key Properties: Excellent elasticity, high tensile strength, good tear resistance, low hysteresis (good resilience), low heat build-up, good abrasion resistance. Poor resistance to oils, fuels, ozone, and weathering. Good low-temperature flexibility. Common Applications: Tires, engine […]
Hot Forging
Hot forging involves shaping the metal above its recrystallization point, which is typically between 0.3 and 0.5 times its absolute melting temperature (Tm). With this, the metal is much easier to shape, especially for metals that are hard to work with when cold. Advantages Thanks to high temperatures, the metal’s resistance to deformation […]
Rolled-Ring Forging
This process starts with a round billet, and then a hole is punched in the center, turning it into a thick ring. The ring is then heated and rolled between tools that spread it out. The metal stretches outward while the ring gets thinner and wider. The grain also flows in a circular path, making […]
Application Scenarios for Metal Parts Based on Hardness
Metal hardness (typically measured on scales like Rockwell C – HRC, or Vickers – HV) is a critical property determining a part’s suitability for specific applications. Here’s a breakdown of common hardness ranges and their ideal usage scenarios: Low Hardness (e.g., Annealed Steels: < 20 HRC, Pure Copper/Aluminum: < 60 HV) Typical Metals: Annealed low-carbon steels […]
Closed-Die (Impression-Die) Forging
This is a process where a heated billet is placed between shaped dies that contain the exact outline of the part. The metal fills the die cavity under pressure, and extra material flows out as flash, which is later trimmed off. This process often involves three steps: Edging: This step distributes the metal […]
