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Mineral casting and manufacturing process thereof

A manufacturing process, a technology of mineral castings, applied in the field of mineral castings and its manufacturing process, can solve the problems of compressive strength, flexural strength and elastic modulus to be improved, and achieve the advantages of easy popularization and application, simple operation and low energy consumption Effect

Pending Publication Date: 2022-02-01
郑建华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The compressive strength, flexural strength and elastic modulus of existing mineral castings need to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A manufacturing process of mineral castings, comprising the following steps:

[0038] In terms of mass fraction, the raw materials include: 6% resin, 90% sandstone, 0.1% curing agent, 0.1% defoamer, 3.7% admixture for steam-cured concrete products and 0.1% dyed iron black, the total amount is 1 ton .

[0039] Mix the raw materials and pour at 30Hz. The pouring rate is 3kg / min. After pouring, vibrate at 40Hz for 20min, then at 30Hz for 15min; then cure at room temperature for 1.5h, at 38°C for 2h, and at 60°C 1h, solidified at 80°C for 2h, and finally cooled and demolded.

[0040] The sand in this embodiment includes quartz sand and basalt, the particle size of the quartz sand is 0.06mm, and the particle size of the basalt is 2mm.

Embodiment 2

[0042] A manufacturing process of mineral castings, comprising the following steps:

[0043] In terms of mass fraction, the raw materials include: 10% resin, 80% sand and gravel, 1% curing agent, 0.5% defoamer, 8% admixture for steam-cured concrete products and 0.5% dyed iron black, the total amount is 1 ton .

[0044] Mix the raw materials and pour at 40Hz with a pouring rate of 10kg / min. After pouring, first vibrate at 45Hz for 25min, then vibrate at 35Hz for 20min; then cure at room temperature for 2h, at 42°C for 2.5h, and at 65°C 1.5h, solidified at 85°C for 2.5h, and finally cooled and demolded.

[0045] Sand and gravel include quartz sand and basalt, the particle size of quartz sand is 1.2mm, and the particle size of basalt is 11mm.

Embodiment 3

[0047] A manufacturing process of mineral castings, comprising the following steps:

[0048] In terms of mass fraction, the raw materials include: 8% resin, 86% sand and gravel, 0.6% curing agent, 0.2% defoamer, 5% admixture for steam-cured concrete products and 0.2% dyed iron black, the total amount is 1 ton .

[0049] Mix the raw materials and pour at 35Hz with a pouring rate of 5kg / min. After pouring, first vibrate at 42Hz for 22min, then vibrate at 32Hz for 18min; then cure at room temperature for 1.8h, at 40°C for 2.2h, Curing for 1.2 hours, curing at 82°C for 2.3 hours, and finally cooling and demoulding.

[0050] Sand and gravel include quartz sand and basalt, the particle size of quartz sand is 0.25mm, and the particle size of basalt is 6mm.

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PUM

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Abstract

The invention provides a mineral casting and a manufacturing process thereof, and relates to the technical field of mineral castings. The manufacturing process of the mineral casting comprises the steps that: after raw materials are mixed, pouring is conducted at the frequency of 30-40 Hz, the pouring rate is 3-10 kg / min, and after pouring, vibration is conducted for 20-25 min at the frequency of 40-45 Hz and then conducted for 15-20 min at the frequency of 30-35 Hz; curing is performed for 1.5-2 hours at normal temperature, curing is performed for 2-2.5 hours at 38-42 DEG C, curing is performed for 1-1.5 hours at 60-65 DEG C and curing is performed for 2-2.5 hours at 80-85 DEG C in sequence; and finally cooling and demolding are performed. According to the preparation process, the compressive strength, the breaking strength and the elastic modulus of the mineral casting can be remarkably improved, the comprehensive performance of the mineral casting is better, the application range is wider, and the service life of the casting is longer. The compressive strength of the casting can reach 188 MPa, the breaking strength of the casting can reach 39 MPa, and the elastic modulus of the casting can reach 52 GPa.

Description

technical field [0001] The invention relates to the technical field of mineral castings, in particular to a mineral casting and a manufacturing process thereof. Background technique [0002] Mineral castings can be used as structural parts of machines to replace traditional cast iron. It is common to use resin as a binder to bond aggregates together. It has excellent mechanical properties, and has excellent shock resistance, precision, and damping properties. With good performance, it has been widely used as processing lathes and other applications. With the continuous improvement of its performance, its application fields are becoming wider and wider. [0003] Aggregate substrates play an important role as structural material for mineral castings. The current simple aggregate forming process leads to poor product quality and physical properties, which limits the application of mineral castings in machinery. [0004] With the enhancement of people's awareness of environmen...

Claims

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Application Information

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IPC IPC(8): B29C67/24B29C39/02B29C39/22
CPCB29C67/243B29C39/02B29C39/22
Inventor 郑建华
Owner 郑建华
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