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Alloy cast iron glass mold material

A technology of glass mold materials and alloy cast iron, which is applied in the field of glass mold materials, can solve the problems of increased production costs of mold materials, and achieve the effects of delaying oxidation growth, improving thermal fatigue resistance, and good thermal conductivity

Inactive Publication Date: 2009-10-14
ORI MOLD TECH SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of precious metal elements such as Mo and Cu will greatly increase the production cost of mold materials.

Method used

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  • Alloy cast iron glass mold material
  • Alloy cast iron glass mold material
  • Alloy cast iron glass mold material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] 3.0% carbon (C), 2.1% silicon (Si), 0.3% manganese (Mn), 0.02% sulfur (S), 0.04% phosphorus (P), 0.1% titanium (Ti), 0.30% Chromium (Cr) and the rest iron (Fe).

[0014] The applicant tested the mold obtained by the ratio of the ingredients in this example, and the results showed that the matrix structure is ferrite, the graphite shape is spherical + worm-like graphite, and the thermal fatigue test at 750°C shows that the number of visible cracks first appeared 34 times. The crack length at the 50th time was 5.4mm. After the same number of cycles, the maximum deformation of the sample diameter was 0.32mm, and the relative wear of the sample was 73%. The same batch of molds was handed over to the customer for use. It is reported that the service life of the same batch of molds reaches 640,000 times / pair, and the photo of the as-cast metallographic structure is shown in figure 1 .

Embodiment 2

[0016] 3.8% carbon (C), 2.4% silicon (Si), 0.3% manganese (Mn), 0.03% sulfur (S), 0.04% phosphorus (P), 0.05% titanium (Ti), 0.10% Chromium (Cr) and the rest iron (Fe).

[0017] The applicant tested the mold obtained from the ratio of ingredients in this example, and the results showed that the matrix structure was ferrite, and the graphite was in the form of fine spherical + worm-like graphite. In the thermal fatigue test at 750°C, the number of visible cracks first appeared was 30 times. , the crack length at the 50th time was 5.8mm. After the same number of cycles, the maximum deformation of the sample diameter was 0.36mm, and the relative wear of the sample was 78%. The same batch of molds was handed over to the customer for use. The customer feedback that the service life of the same batch of molds reached 610,000 times / pair, and the photo of the as-cast metallographic structure is shown in figure 2 . All the other are the same as the description of embodiment 1.

Embodiment 3

[0019] 3.5% carbon (C), 2.8% silicon (Si), 0.2% manganese (Mn), 0.03% sulfur (S), 0.04% phosphorus (P), 0.2% titanium (Ti), 0.30% Chromium (Cr) and the rest iron (Fe).

[0020] The applicant tested the mold obtained by the ratio of ingredients in this example, and the results showed that the matrix structure was ferrite, and the graphite morphology was fine spherical + worm-like graphite. In the thermal fatigue test at 750°C, the number of visible cracks first appeared was 38 times. , the crack length at the 50th time is 4.5mm. After the same number of cycles, the maximum deformation of the sample diameter is 0.21mm, and the relative wear of the sample is 70%. The same batch of molds is handed over to the user for use. The user feedback that the service life of the same batch of molds reached 690,000 times / pair, and the photo of the as-cast metallographic structure is shown in image 3 . All the other are the same as the description of embodiment 1.

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Abstract

The invention relates to an alloy cast iron glass mold material, belonging to the technical field of glass mold material. The material comprises the chemical components according to the mass percent: 3.0-3.8% of carbon, 1.9-3.0% of silicon, 0.2-1.0% of manganese, less than 0.035% of sulfur, less than 0.05% of phosphorus, 0.08-0.25% of titanium, 0.08-0.4% of chromium and the rest of ferrum. The alloy cast iron glass mold material has the advantages that the oxidation growth of the mold can be deferred, and the mold is not easy to crack and has good corrosion resistance; the mold has good thermal conduction when in use; the thermal fatigue resistance is remarkably improved, and the service life of the mold reaches 600-700 thousand times; and the cost for producing the mold material can be effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of glass mold materials, in particular to an alloy cast iron glass mold material. Background technique [0002] Glass mold is an important process equipment for forming glass products. In the actual production process, the inner cavity of the glass mold is frequently in contact with molten hot glass at about 1100°C, and the glass product is cooled and hardened in it, so the temperature of the glass mold itself changes in a wide range. During this process, the glass The mold gradually fails due to continuous oxidation, corrosion, growth, cold and heat fatigue impact and friction caused by the sliding contact between the inner cavity and the hot glass. It can be seen that one of the main factors of failure is high temperature oxidation; the other is thermal fatigue damage. In view of this, for the production of glass products, glass molds are undoubtedly required to have good oxidation resistance, corrosion r...

Claims

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Application Information

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IPC IPC(8): C22C37/10
Inventor 戈剑鸣
Owner ORI MOLD TECH SUZHOU
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