Treatment method for rough particle surface of extruded machinery equipment products

If puffing machinery is installed, an abnormality is not necessarily a machine issue; first check the operating code.

(A) Reasons for rough surface appearance

a. The raw material fiber quality is too high, and the crushing fineness does not meet requirements.

b. Too many die holes.

c. Poor cutting tools or flour deviation.

(B) Puffing machinery equipment - reasons for abnormal particles

(1) Reasons for deformed particles (bullets, flanges, skewed cuts):

a. Incorrect angle pressure, uneven mold surface, or damaged cutting tools.

b. Water content too high (in the case of large particles).

(2) Reasons for particle size: insufficient ripening, oversized die openings, excessive screw compression, or excessive clearance between the sleeve and the screw.

(3) The particles are columnar, with insufficient maturity or powdery texture.

(3) The swelling degree exceeds the particle weight, the steam is too high, and the aging time is too long.

There are formula variations (4) for low-yield materials. The main unit's internal pipe is not cleaned thoroughly. The gap in the spiral extrusion sleeve is too large, resulting in insufficient powder fineness and excessive puffing.

There are many types of puffing mechanical equipment, and the operation methods vary. Extruders are essentially divided into single-screw and twin-screw, on-site variable frequency control, and fixed or non-variable frequency puffing mechanical equipment. Specific problems should be analyzed on a case-by-case basis. Of course, safe operation is a top priority.