Manufacturing method and manufacturing die for producing thread bushing of barrel of plastic extruding machine
A technology for extruding barrels and manufacturing molds, which is applied to the manufacturing method for producing extruder barrel threaded sleeves and the field of manufacturing molds, can solve the problems of low wear resistance, long production cycle and the like, and achieves prevention of cracking and oxidation. phenomenon, the effect of ensuring product quality stability
Active Publication Date: 2021-05-25
马鞍山市华威冶金机械有限公司
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Problems solved by technology
[0005] Aiming at the problems of low wear resistance and long production cycle of twin-screw extruder cylinder threaded sleeves in the prior art, the present invention provides a manufacturing method for producing extruder cylinder threaded sleeves and a manufacturing mold thereof, which can be produced in batches The production of twin-screw extruder barrel threaded sleeves reduces the production cycle, and the finished twin-screw extruder barrel threaded sleeves produced have good wear resistance, and effectively reduce material costs and production costs
Method used
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Embodiment 1
[0052] Such as Figure 1-Figure 3 Shown, a kind of manufacturing method of producing extruder barrel screw sleeve of the present embodiment, as figure 1 As shown, the following process steps are included:
[0053] Step 1: Make a mold, including sand mixing, foundry molding and box closing, to form an upper box 100 with multiple thermal insulation risers 130 and a lower box 200 with multiple ingates 220, the upper box 100 and the lower box 200 A plurality of threaded sleeve casting cavities 230 for producing the blank body of the threaded sleeve of the twin-screw extruder barrel are formed between them; it breaks the low efficiency of traditional artificial molding, and uses the method of "casting instead of forging" to make mechanical modeling standardization with molds Batch casting of product blanks greatly shortens the production cycle, reduces production costs, improves production efficiency, effectively saves production costs, and improves production timeliness, which is...
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The invention discloses a manufacturing method and a manufacturing die for producing a thread bushing of a barrel of a plastic extruding machine, and belongs to the technical field of the thread bushing. The manufacturing method comprises the following process steps of: die production, pouring, heat preservation, knockout and shakeout, riser removal, shot blasting and polishing, softening and annealing, rough machining, quenching, tempering and finished product acceptance inspection after finish machining, wherein in the quenching step, the roughly-machined thread bushing of the barrel of the double-screw plastic extruding machine is uniformly heated and warmed to the temperature of 950 to 1,050 DEG C in a vacuum heat treatment furnace at a heating rate of 50 to 70 DEG C per hour, then is subjected to heat preservation for 3h to 5h, and then is cooled to 80 DEG C or below in a nitrogen cooling manner in the vacuum heat treatment furnace to be discharged out of the furnace. Aiming at the problems of relatively low wear resistance and relatively long production period of the thread bushing of the barrel of the double-screw plastic extruding machine in the prior art, the thread bushing of the barrel of the double-screw plastic extruding machine can be produced in batches, the production period is shortened, the produced finished thread bushing of the barrel of the double-screw plastic extruding machine is good in wear resistance, and the material cost and the production cost are effectively reduced.
Description
technical field [0001] The invention belongs to the technical field of threaded sleeves, and more specifically relates to a method for producing threaded sleeves of extruder barrels and a manufacturing mold thereof. Background technique [0002] Twin-screw extruder barrel threaded sleeve is one of the core processing components on the twin-screw plastic pellet extruder. The components are required to have excellent processability, high wear resistance and toughness. At present, the thread sleeve material of twin-screw extruder barrel is usually W6Mo5Cr4V2 high-speed steel. This material is made into thread sleeve of twin-screw extruder barrel after forging, heat treatment, and processing. The material cost and manufacturing cost are high, and the production cycle is long. Insufficient wear resistance causes frequent component replacements and delays production. Therefore, be badly in need of designing a kind of manufacturing method and its manufacturing mold of twin-screw e...
Claims
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IPC IPC(8): B22C9/02B22C9/20C22C37/10C22C37/06C22C33/08C21D1/18C21D1/773B22C9/08B22C9/24
CPCB22C9/02B22C9/20C22C37/10C22C37/06C22C33/08C21D1/18C21D1/773B22C9/082B22C9/088B22C9/24
Inventor 费文鑫魏贤飞
Owner 马鞍山市华威冶金机械有限公司