Why precision machining, heat treatment and metrology determine screw barrel performance?
Whether it's for plastic injection molding, food packaging or automotive parts production, the Screw Barrel is the heart of the plant! Its processing quality directly determines the factory's productivity, energy costs and product yield.
1️⃣ Precision machining: Micron-level accuracy determines melt efficiency
The tolerance of screw thread lead and groove depth should be controlled within ±0.01mm, otherwise it will lead to uneven melt flow and soaring energy consumption.
2️⃣ Heat treatment: the core guarantee of wear resistance and service life
Surface hardness reaches HRC60-65, and the core maintains toughness. Formation of 10-20μm dense nitride layer, wear-resistant life increased by 3-5 times.
3️⃣ Measurement & Feedback: data-driven closed loop quality
Full-size profile comparisons (±2μm accuracy) to determine cumulative thread error. Verification of penetration depth and microstructure to eliminate heat treatment defects.
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The main part of the pin screw is a conventional screw which can be placed in the groove of the melting section or the metering section of the screw or the smooth cylindrical surface without the groove at the end of the metering section. The pins are arranged in a certain arrangement, and the density can vary from one to another. The cylindrical pin is formed by fitting the pin into the hole of the screw; the square or diamond pin is formed by milling the pin directly on the screw.
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