CN-119506546-B - Novel preparation method of pressing and pasting wheel for large-scale automatic woodworking machinery

CN119506546BCN 119506546 BCN119506546 BCN 119506546BCN-119506546-B

Abstract

The invention relates to the technical field of woodworking machinery equipment manufacture, and discloses a novel preparation method of a pressing and pasting wheel for large-scale automatic woodworking machinery, which adopts 45 steel round bar materials, performs preliminary machining on the materials after blanking to obtain a primary workpiece, places the obtained primary workpiece into an atmosphere protection heat treatment furnace for preliminary heat treatment, and utilizes a high-precision machine tool to process the primary workpiece after the preliminary heat treatment, the inner hole is enlarged in advance in finish machining, so that the allowance is reserved in the inner hole of the primary workpiece, a secondary workpiece is obtained after machining, then the secondary workpiece directly enters a gas co-permeation furnace, a pressing wheel is obtained after treatment, the pressing wheel is discharged from the furnace and cooled in air, the pressing wheel is placed in a sealing furnace, nitrogen, ammonia and an beautifying agent are introduced for heating, and the pressing wheel is placed in the air for cooling after treatment. The invention has the advantages of no three wastes discharge, environment protection, easy operation, low cost, and far higher surface hardness, wear resistance and corrosion resistance than technical index requirements.

Inventors

HE SHENGGUO
SUN XIANGGUO
YANG CHUAN
XU JIANHUA
WANG BO
YIN HANQI

Assignees

四川丹齿精工科技有限公司
四川轻化工大学
四川瑞致中鸿科技有限公司

Dates

Publication Date: 20260508
Application Date: 20241202

Claims (1)

1. The novel preparation method of the pressing and pasting wheel for the large-scale automatic woodworking machinery is characterized by comprising the following steps of: step (1), rough machining of materials, namely adopting 45 steel round bar materials, and carrying out preliminary machining on the materials after blanking to obtain a primary workpiece; The primary workpiece obtained in the step (1) is placed into an atmosphere protection heat treatment furnace to be subjected to preliminary heat treatment, the primary workpiece is placed on a tool frame and pushed into the heat treatment furnace to be heated for the first time, clear water at 20 ℃ is added to cool the primary workpiece after the primary workpiece is discharged from the furnace, and then the primary workpiece is placed into the heat treatment furnace again to be heated for the second time, and the primary workpiece is placed into air to be cooled after the primary workpiece is discharged from the furnace; And (3) a finish machining process, namely, carrying out finish machining on the primary workpiece subjected to the preliminary heat treatment by utilizing a high-precision machine tool, wherein the finish machining is to enlarge an inner hole in advance, so that the inner hole of the primary workpiece wheel is reserved with allowance, and a secondary workpiece is obtained after machining, wherein the relation formula between the thickness and the diameter increment is as follows: ΔΦ=0.0912×H Wherein, delta phi-the increment of the diameter phi inner hole of the pressing wheel is micrometer, the thickness of the H-multielement co-permeation compound layer is micrometer; Step (4), performing gas co-permeation treatment, namely directly feeding the secondary workpiece subjected to the finish machining in the step (3) into a gas co-permeation furnace, always keeping the pressure in the gas co-permeation furnace at the positive pressure of 200-1200 Pa, obtaining a pressing wheel after the treatment, and directly discharging the pressing wheel from the furnace to be cooled in the air; the step (5) of beautifying treatment, which is to put the pressing wheel treated in the step (4) into a sealing furnace, introduce nitrogen, ammonia and beautifying agent for heating, and put the pressing wheel into air for cooling after beautifying treatment; The atmosphere in the gas co-permeation furnace in the step (4) is mixed gas of ammonia gas, natural gas, carbon dioxide gas, nitrogen and additives, wherein the additives are a mixture of methanol, acetone, formamide and alcohol; the temperature of the gas co-permeation furnace in the step (4) is 580-680 ℃, and the co-permeation time is 1.0-2.5 hours; The beautifying agent used in the step (5) is alcohol and acetone mixture; the temperature of the first heating in the step (2) is 840-860 ℃ and the time is 1 hour; the heating temperature of the secondary heating in the step (2) is 580-620 ℃ and the time is 1.5 hours; In the step (5), the heating temperature is 400-600 ℃ and the time is 1.5 hours.

Description

Novel preparation method of pressing and pasting wheel for large-scale automatic woodworking machinery Technical Field The invention relates to the technical field of manufacturing of woodworking machinery equipment, in particular to a novel manufacturing method of a pressing and pasting wheel for a large-scale automatic woodworking machine. Background The pressing wheel in large woodworking machinery equipment not only requires high surface hardness, but also has an anti-corrosion function, so that a surface treatment technology is required. At present, all domestic production enterprises adopt the technology of electroplating chromium to reach corresponding technical requirements. It is known that the acid washing treatment is required before the electroplating of chromium, but trivalent chromium in the electroplating solution belongs to a carcinogen, if the waste liquid is discharged randomly, the environment is inevitably polluted seriously, and since the current country has strict environmental protection requirements, some small electroplating enterprises are closed, and the large electroplating enterprises can discharge the waste liquid after strict post treatment, so the production cost is greatly increased. Meanwhile, the anti-corrosion performance of the electroplating layer is obtained from the thickness of the electroplating layer, so that the thickness of the electroplating layer is controlled to be the lower limit for reducing the cost for many enterprises, and the anti-corrosion performance can not meet the requirement of salt spray test standards under many conditions. Therefore, how to provide a novel manufacturing method of the pressing and pasting wheel for the large-scale automatic woodworking machinery is a problem to be solved by the technicians in the field. Disclosure of Invention In view of the above, the invention provides a novel preparation method of the pressing and pasting wheel for large-scale automatic woodworking machinery, which has the advantages of no three-waste emission in the production process, environment protection, easy operation and low cost, and the surface hardness, the wear resistance and the corrosion resistance of the pressing and pasting wheel which are achieved by the preparation amount are far higher than the technical index requirements. In order to achieve the above purpose, the novel preparation method of the pressing and pasting wheel for the large-scale automatic woodworking machinery provided by the invention comprises the following steps: step (1), rough machining of materials, namely, carrying out preliminary machining on the materials after blanking by adopting 45 steel round bar materials to obtain a primary workpiece; The primary workpiece obtained in the step (1) is placed into an atmosphere protection heat treatment furnace to be subjected to preliminary heat treatment, the primary workpiece is placed on a tool frame and pushed into the heat treatment furnace to be heated for the first time, clear water at 20 ℃ is added to cool the primary workpiece after the primary workpiece is discharged from the furnace, and then the primary workpiece is placed into the heat treatment furnace again to be heated for the second time, and the primary workpiece is placed into air to be cooled after the primary workpiece is discharged from the furnace; And (3) a finish machining process, namely, carrying out finish machining on the primary workpiece subjected to the preliminary heat treatment by utilizing a high-precision machine tool, wherein the finish machining is to enlarge an inner hole in advance, so that the inner hole of the primary workpiece wheel is reserved with allowance, and a secondary workpiece is obtained after machining, wherein the relation formula between the thickness and the diameter increment is as follows: ΔΦ=0.0912×H Wherein, delta phi-the increment of the diameter phi inner hole of the pressing wheel is micrometer, the thickness of the H-multielement co-permeation compound layer is micrometer; Step (4), gas co-permeation treatment, namely directly feeding the secondary workpiece subjected to finish machining in the step (3) into a gas co-permeation furnace, keeping the pressure in the co-permeation furnace at the positive pressure of 200-1200 Pa all the time, obtaining a pressing wheel after treatment, and directly discharging the pressing wheel from the furnace to be cooled in the air; and (5) beautifying treatment, namely placing the pressing wheel treated in the step (4) into a sealing furnace, introducing nitrogen, ammonia and an beautifying agent, heating, and cooling the pressing wheel in air after the treatment. Preferably, the temperature of the first heating in the step (2) is 840-860 ℃ and the time is 1 hour. Preferably, the heating temperature of the secondary heating in the step (2) is 580-620 ℃ for 1.5 hours. Preferably, the temperature of the gas co-permeation furnace in the step (4) is 580-680 ℃, and the co-permeation tim