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CN-122008588-A - Production process for molding and trimming of wet cast steel ceiling framework and molding die thereof

CN122008588ACN 122008588 ACN122008588 ACN 122008588ACN-122008588-A

Abstract

The present invention discloses a production process and a forming mold for wet cast steel ceiling skeleton forming and cutting edges, aiming to provide a high-quality, high-precision, and high-efficiency production process and forming mold for wet cast steel ceiling skeleton forming and cutting edges. The technical solution includes a combination of raw material preparation, material preheating, mold preparation, forming operation, cutting process, and post-treatment processes, with precise control of each link, significantly improving product quality, production efficiency, and market competitiveness, and having good economic and social benefits. The present invention is applicable to the technical field of wet cast steel roof canopy skeleton.

Inventors

  • WANG QIONG

Assignees

  • 临海市圣顺模具制造有限公司

Dates

Publication Date
20260512
Application Date
20260208

Claims (6)

  1. 1. The production process of the wet cast steel ceiling framework forming and trimming is characterized by comprising the following steps of: s1, preparing raw materials, namely taking a glass fiber felt reinforced thermoplastic plastic sheet as a main material of a tent frame, wherein the glass fiber content of the material is 30-50%, the tensile strength is not lower than 80MPa, and the bending strength is not lower than 120MPa; S2, preheating the material, namely placing the material into a preheating furnace, controlling the preheating temperature to be 200-220 ℃ and the preheating time to be 3-5 minutes, so that the material reaches a uniform thermoplastic state, and ensuring the fluidity and plasticity of the material in the subsequent forming process; S3, preparing a mould, namely cleaning a forming trimming mould and coating a release agent to ensure that the surface of the mould is smooth, and uniformly covering the release agent, wherein the thickness is controlled to be 0.05-0.1mm; preheating the die to 80-100 ℃ to reduce the temperature difference between the material and the die and improve the molding quality; s4, molding operation, namely rapidly transferring the preheated material into a molding trimming die, controlling the die closing pressure to be 10-15MPa and the dwell time to be 2-3 minutes, and fully molding the material in a die cavity to obtain the required tent frame shape; In the forming process, circulating cooling water is introduced through a cooling channel in the die, and the temperature of the cooling water is controlled at 20-30 ℃ so as to accelerate the cooling and solidification of the material; S5, a trimming procedure, namely after the awning framework is cooled to 40-60 ℃, trimming by utilizing a trimming structure on a die, wherein the sharpness of a cutting edge of a trimming cutter is 0.01-0.03mm, the trimming speed is 50-100mm/S, and the trimming dimensional accuracy is controlled within +/-0.5 mm; s6, post-treatment, namely performing post-treatment operations such as deburring and cleaning on the trimmed tent frame, and removing residual impurities and burrs on the surface to enable the surface roughness of the tent frame to reach Ra6.3-12.5 mu m.
  2. 2. The process for producing the molded trimming of the wet cast steel ceiling framework according to claim 1, wherein in the molding operation step, a progressive pressurizing mode is adopted in the mold closing process, the initial pressure is 3-5MPa, and the mold closing pressure is gradually increased to the set mold closing pressure within 1-2 minutes.
  3. 3. The process for producing the molded trimming edges of the wet cast steel ceiling framework according to claim 1, wherein in the post-treatment step, a high-pressure water gun is used for cleaning, and the water gun pressure is 1-3MPa, so that surface impurities are thoroughly removed.
  4. 4. A forming die for a wet cast steel ceiling framework forming and trimming production process according to claims 1-3, characterized in that the forming die consists of a lower die body and an upper die body, wherein the lower die body is provided with a forming cavity matched with the shape of the wet cast steel ceiling framework, and a temperature control pipeline (2) is arranged in the lower die base and is continuously distributed in a serpentine shape and used for circulating a temperature control medium to regulate and control the temperature in the forming process.
  5. 5. The forming die for the wet cast steel ceiling skeleton forming and trimming production process according to claim 4, wherein the lower die body is internally provided with reinforcing ribs (3) for improving the structural strength and the deformation resistance of the die.
  6. 6. The forming die for the wet cast steel ceiling skeleton forming and trimming production process according to claim 4, wherein the lower die body is further provided with radiating holes (4) arranged in a rectangular array.

Description

Production process for molding and trimming of wet cast steel ceiling framework and molding die thereof Technical Field The invention relates to the technical field of wet cast steel ceiling frameworks, in particular to a production process for forming and trimming wet cast steel ceiling frameworks and a forming die thereof. Background In the early cast steel process, dry forming is mostly adopted, and the problem of uneven glass fiber distribution easily occurs in the production process by the method, so that the strength and mechanical properties of the tent frame are unstable. And the fluidity of the dry-method molding material is poor, and the dry-method molding material is difficult to fully fill in a mold with a complex shape, so that the molded product has local defects such as holes, cracks and the like, and the quality and the service life of the product are seriously affected. In addition, the conventional process lacks accurate control means in the forming and trimming processes, for example, the control of forming pressure and dwell time is not accurate enough, and product size deviation is easy to cause and high-precision assembly requirements cannot be met. In the trimming process, the sharpness of the cutting edge and the trimming speed of the cutter are difficult to effectively control, so that the trimming size precision is low, the edge is uneven, a large number of subsequent manual trimming work is needed, and the production cost and the production period are increased. Disclosure of Invention Aiming at the defects existing in the prior art, the invention aims to provide a production process and a forming die for forming and trimming a wet cast steel ceiling framework with high quality, high precision and high efficiency. In order to achieve the purpose, the invention provides a production process for forming and trimming a wet cast steel ceiling framework, which comprises the following steps: s1, preparing raw materials, namely taking a glass fiber felt reinforced thermoplastic plastic sheet as a main material of a tent frame, wherein the glass fiber content of the material is 30-50%, the tensile strength is not lower than 80MPa, and the bending strength is not lower than 120MPa; S2, preheating the material, namely placing the material into a preheating furnace, controlling the preheating temperature to be 200-220 ℃ and the preheating time to be 3-5 minutes, so that the material reaches a uniform thermoplastic state, and ensuring the fluidity and plasticity of the material in the subsequent forming process; S3, preparing a mould, namely cleaning a forming trimming mould and coating a release agent to ensure that the surface of the mould is smooth, and uniformly covering the release agent, wherein the thickness is controlled to be 0.05-0.1mm; preheating the die to 80-100 ℃ to reduce the temperature difference between the material and the die and improve the molding quality; s4, molding operation, namely rapidly transferring the preheated material into a molding trimming die, controlling the die closing pressure to be 10-15MPa and the dwell time to be 2-3 minutes, and fully molding the material in a die cavity to obtain the required tent frame shape; In the forming process, circulating cooling water is introduced through a cooling channel in the die, and the temperature of the cooling water is controlled at 20-30 ℃ so as to accelerate the cooling and solidification of the material; S5, a trimming procedure, namely after the awning framework is cooled to 40-60 ℃, trimming by utilizing a trimming structure on a die, wherein the sharpness of a cutting edge of a trimming cutter is 0.01-0.03mm, the trimming speed is 50-100mm/S, and the trimming dimensional accuracy is controlled within +/-0.5 mm; s6, post-treatment, namely performing post-treatment operations such as deburring and cleaning on the trimmed tent frame, and removing residual impurities and burrs on the surface to enable the surface roughness of the tent frame to reach Ra6.3-12.5 mu m. The invention further provides that in the molding operation step, the die assembly process adopts a progressive pressurizing mode, the initial pressure is 3-5MPa, and the die assembly pressure is gradually increased to the set die assembly pressure within 1-2 minutes. The invention further provides that in the post-treatment step, a high-pressure water gun is adopted for cleaning, and the pressure of the water gun is 1-3MPa, so that the surface impurities can be thoroughly removed. The application also provides a forming die for the wet cast steel ceiling skeleton forming and trimming production process, which consists of a lower die body and an upper die body, wherein the lower die body is provided with a forming cavity matched with the shape of the wet cast steel ceiling skeleton, and temperature control pipelines are arranged in the lower die base and are continuously distributed in a serpentine shape and used for circulating temperature control m