CN101975689B

CN101975689B - Method for preparing multiple liquid metal samples for once

Info

Publication number: CN101975689B
Application number: CN201010500740A
Authority: CN
Inventors: 孙原生; 周伟革
Original assignee: Shanxi Taigang Stainless Steel Co Ltd
Current assignee: Shanxi Taigang Stainless Steel Co Ltd
Priority date: 2010-09-27
Filing date: 2010-09-27
Publication date: 2011-12-28
Anticipated expiration: 2030-09-27
Also published as: CN101975689A

Abstract

The invention relates to a method for preparing multiple liquid metal samples for once. The method comprises the following steps: preparing a multi-cavity sampler for the samples, wherein the sampler is characterized in that the external walls of a protective paper pipe and an air exhaust paper pipe of a protective gun are respectively coated with a refractory material layer with the thickness of 1.5mm, a plurality of samplers with single-cavity structures are fixed together, a holding gun rod is fixed together with the samplers with the single-cavity structures, and the holding gun rod is fixedly connected with a holder; accurately selecting the insertion point of a steel liquid surface; utilizing the holder to drive the samplers with the single-cavity structures to be rapidly inserted into the position which is 600mm below the steel liquid surface for 5 seconds along a mechanical track; transferring the holder and the samplers with the single-cavity structures to a steel ladle operating platform; taking out casting molds and rapidly putting the casting mold the samples in the casting molds into water with the temperature of 20 DEG C for 1 minute; and cooling, peeling, cutting and grinding the casting molds for 5 minutes. The invention has the advantages that the sampling success rate is 99.9%; the total time for preparing the samples is short; the accuracy of the chemical analysis conclusion on the liquid steel is high; and the uniformity is high.

Description

The method that once prepares a plurality of liquid metal samples

Technical field:

The invention belongs to the specimen preparation that liquid metal chemical composition is analyzed.

Background technology:

Existing liquid metal sampler, be to use sand mold, pottery, metal mold, single chamber structure that the produced with combination of materials such as quartz glass or these materials forms, the volume of sample of obtaining little (paper tube diameter ￠ 50～60mm * length 400mm) and once can only obtain a sample, contain bag liquid in a certain xsect chemical constitution representativeness and analysis of Uniformity if will carry out motlten metal, need a plurality of samples, just must carry out repeatedly sampling operation, owing to be subjected to temperature and sampler insertion depth, angle, the time interval, the influence of factors such as some position, the data of each sampling have difference, and the error that causes analyzing data is bigger.

Summary of the invention:

In order to reduce analytical error, can once obtain several samples, the invention provides the method that once prepares a plurality of liquid metal samples.

The present invention includes the multi-cavity chamber sampler of preparation sample; multi-cavity chamber sampler comprises the sampler of single chamber structure; the protection paper tube; the sampler of single chamber structure comprises the metal mold cup; be embedded with ceramic sprue cup in the upper end of metal mold cup; the bottom package metal jam of metal mold cup; metal mold is arranged in the protection paper tube; the protection paper tube is provided with draining hole; draining hole is provided with drainage pottery sprue cup; the top of protection paper tube is provided with protects rifle exhaust paper tube; it is characterized in that protecting paper tube; the outer wall that protects rifle exhaust paper tube all scribbles the refractory masses that thickness is 1.5mm; the sampler of several single chamber structures is fixed together; the sampler of clamping barral of a gun and several single chamber structures is fixed together; make an accurate selection of molten steel face insertion point; operation electric control starting button; the clamper band the sampler of several single chamber structures along mechanical tracks; insert 5 seconds kinds in degree of depth 600mm place under the liquid steel level rapidly; button is extracted in operation; the sampler of the clamper band several single chamber structures moves to the ladle operating platform together; lay down sampler; take out mold and put into 20 ℃ of water fast 1 minute together with interior Sheng sample; carrying out Quench handles; through cooling; dial from; cutting; grind, the time is 5 minutes.

The advantage that the present invention has is: 1, give full play to ladle mechanized equipment power, overcome the large volume sampler and inserting the molten steel buoyancy that the molten steel sampling process produces.

2, three extract sample simultaneously: i.e. same time, same angle points position, the same degree of depth once obtains several samples, and higher to molten steel chemical composition analysis conclusion accuracy, homogeneity is better.

3, the sampling success ratio reaches 99%, sampling, cooling, dial from, cutting, to grind sample preparation T.T. short, demonstrates fully reliable, convenient.

Description of drawings

Fig. 1 is the structural drawing of the sampler of single chamber structure of the present invention.

Fig. 2 is the protection paper tube fixed form synoptic diagram of the embodiment of the invention.

Fig. 3 is the clamping barral of a gun of the embodiment of the invention and protects rifle exhaust paper tube fixed form synoptic diagram.

Among the above-mentioned figure: 1-mechanical gripper barral of a gun, 2-protect rifle exhaust paper tube, and 3-protects paper tube outward, 4-draining hole, 5-∮ 6 crosses binding set bolt.

Embodiment

Embodiment: this example is for preparing 4 samples simultaneously.

Outer wall is scribbled the sampler of single chamber structure of 4 internal diameter ￠ 30～35 * external diameter ￠ 42～47 * length 55～65mm of (shown in Figure 1) that thickness is the refractory masses of 1.5mm; by screw retention (shown in Figure 2) together; screw is cross in twos and passes the protection paper tube and 4 protection paper tubes are fixed together; screw is arranged on the protection paper tube outside the two ends of metal mold cup; distance between the screw at two places is 300mm; the clamping barral of a gun with protect rifle exhaust paper tube by screw retention (shown in Figure 3) together; two screws are cross and pass and protect rifle exhaust paper tube and clamping barral of a gun and protect rifle exhaust paper tube and the clamping barral of a gun is fixed together with 4; clamping barral of a gun and clamper are fixed together; make an accurate selection of molten steel face insertion point; operation electric control starting button; the clamper band the sampler of several single chamber structures along mechanical tracks; insert 5 seconds kinds in degree of depth 600mm place under the liquid steel level rapidly; button is extracted in operation; the sampler of the clamper band several single chamber structures moves to the ladle operating platform together; lay down sampler; take out mold and put into 20 ℃ of water fast 1 minute together with interior Sheng sample; carry out chilling action; through cooling; dial from; cutting; grind, the time is 5 minutes.

In the process of binding sampler, to pay special attention to following 2 points:

1, protect paper tube and protecting gun paper tube to beat outward to connect the precision of eyelet must be high, otherwise globality, fastness be poor.

2, protection sheet outer tube layer and protecting gun paper tube skin all will be smeared refractory masses, and fire resistive material is the intensity that the refractory masses of magnalium matter has increased the mechanical resistance molten steel scouring.

Claims

1. the method that once prepares a plurality of liquid metal samples; comprise the multi-cavity chamber sampler for preparing sample; multi-cavity chamber sampler comprises the sampler of single chamber structure; the protection paper tube; the sampler of single chamber structure comprises the metal mold cup; be embedded with ceramic sprue cup in the upper end of metal mold cup; the bottom package metal jam of metal mold cup; the metal mold cup is arranged in the protection paper tube; the protection paper tube is provided with draining hole; draining hole is provided with drainage pottery sprue cup; the top of protection paper tube is provided with protects rifle exhaust paper tube; it is characterized in that protecting paper tube; the outer wall that protects rifle exhaust paper tube all scribbles the refractory masses that thickness is 1.5mm; the sampler of several single chamber structures is fixed together; the sampler of clamping barral of a gun and several single chamber structures is fixed together; clamping barral of a gun and clamper are fixed together; make an accurate selection of molten steel face insertion point; operation electric control starting button; the clamper band the sampler of several single chamber structures along mechanical tracks; insert 5 seconds kinds in degree of depth 600mm place under the liquid steel level rapidly; button is extracted in operation; the sampler of the clamper band several single chamber structures moves to the ladle operating platform together; lay down sampler; take out the metal mold cup and put into 20 ℃ of water fast 1 minute together with interior Sheng sample; carry out chilling action; through cooling; dial from; cutting; grind, the time is 5 minutes.