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Resin sand for casting shape and sand core of natural gas power cylinder body

A technology of resin sand and power cylinder, which is applied in the field of resin sand, can solve problems such as low dimensional accuracy, poor surface finish, sand inclusion, etc., and achieve the effect of improving the accuracy of external dimensions, meeting casting requirements, and high-quality body

Inactive Publication Date: 2014-02-05
CNPC JICHAI POWER EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Due to the complex structure and thin thickness of the natural gas power cylinder, the existing resin sand cannot be applied to the natural gas power cylinder. During the casting process, there are casting defects such as low dimensional accuracy, poor surface finish, sand inclusion, and sand swelling.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The resin sand of the cast natural gas power cylinder body and sand core in this embodiment includes raw sand, resin and p-toluenesulfonic acid.

Embodiment 2

[0050] The resin sand of the cast natural gas power cylinder body and sand core in this embodiment includes raw sand, resin and p-toluenesulfonic acid. The weight of resin is 1.2% of the weight of raw sand, and the weight of p-toluenesulfonic acid is 0.36% of the weight of raw sand.

Embodiment 3

[0052] The resin sand of the cast natural gas power cylinder body and sand core in this embodiment includes raw sand, resin and p-toluenesulfonic acid. The weight of the resin is 1.5% of the raw sand, and the weight of p-toluenesulfonic acid is 1.05% of the raw sand.

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Abstract

The invention discloses resin for casting a shape and a sand core of a natural gas power cylinder body, and aims at solving the problem that the shape and sand core of the natural gas power cylinder body cast by existing resin sand have casting defects such as low accuracy, poor surface smoothness, sand inclusion and sand expansion. The resin sand comprises crude sand, resin and a curing agent. According to the resin sand, the accuracy of the boundary dimension of a casting can be improved, the surface smoothness is also improved, the casting defects such as sand inclusion and sand expansion are reduced, the quality of the casting is improved, and casting requirements of the natural gas power cylinder body are met.

Description

Technical field [0001] The invention belongs to the technical field of natural gas power cylinder blocks, and specifically relates to a resin sand for casting a natural gas power cylinder body and sand core. Background technique [0002] In the prior art, natural gas compression methods mainly adopt pipeline relief steam turbines and centrifugal natural gas compressors for compression. [0003] At present, domestic and foreign natural gas compressors are mainly divided into high-speed and high-power reciprocating piston compressors and low-speed reciprocating compressors. Among them, the high-speed and high-power reciprocating piston compressor, the speed n reaches 1000r / min, the power P reaches 6000kW, is mainly used for the gathering and transportation of natural gas, gas storage, gas injection, and is essential equipment for natural gas exploration, development and storage. . The power cylinder is the main part of the natural gas compressor to provide power in the process of c...

Claims

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Application Information

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IPC IPC(8): B22C1/02
Inventor 李振波刘锐张前李荣飞张钰廖渝隆朱文武吴中麒谭昭金杨鹏刘明星姜超谭学木段悦洪李胜钟明春李健凌波
Owner CNPC JICHAI POWER EQUIP
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