{"id":317415,"date":"2024-10-19T21:54:30","date_gmt":"2024-10-19T21:54:30","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-1902-10-21994\/"},"modified":"2024-10-25T20:09:20","modified_gmt":"2024-10-25T20:09:20","slug":"bs-1902-10-21994","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-1902-10-21994\/","title":{"rendered":"BS 1902-10.2:1994"},"content":{"rendered":"

This Section of BS 1902-10 describes a method for determining the standard air flow capacity of investment casting shell moulds, and the inherent permeability of the shell material, at elevated temperatures.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nBRITISH STANDARD <\/td>\n<\/tr>\n
2<\/td>\nCommittees responsible for this British Standard <\/td>\n<\/tr>\n
3<\/td>\nContents <\/td>\n<\/tr>\n
5<\/td>\n1 Scope
2 Definitions
permeability
air flow capacity
standard air flow capacity (SAF)
3 Principle
4 Apparatus
4.1 Test equipment
4.2 Air supply
4.3 Pressure regulator
4.4 Thermal mass flow sensor
4.5 Pressure sensor <\/td>\n<\/tr>\n
6<\/td>\n4.6 Test piece temperature indication
4.7 Programmable control furnace
Figure 1 – Configuration of test equipment <\/td>\n<\/tr>\n
7<\/td>\nFigure 2 – Pressure-tight thermocouple\/T-piece adaptor for thermocouple entry into air stream <\/td>\n<\/tr>\n
8<\/td>\nFigure 3 – Detail of T-piece <\/td>\n<\/tr>\n
9<\/td>\nFigure 4 – Location of test piece <\/td>\n<\/tr>\n
10<\/td>\n5 Number and form of test pieces
5.1 Number
5.2 Test piece former
5.3 Shelling
5.4 Burn-out <\/td>\n<\/tr>\n
11<\/td>\nFigure 5 – Sample former
6 Test procedure
Table 1 – Test procedure: possible options
7 Shell characterization: procedure A
7.1 Measurement of shell test pieces
7.2 Connecting test piece to apparatus and performing leak checks <\/td>\n<\/tr>\n
12<\/td>\nFigure 6 – Four sample diameter measurement points
7.3 Furnace controller <\/td>\n<\/tr>\n
13<\/td>\n7.4 Test pressure
7.5 Recording data
8 Production\/quality control procedure on a fired shell: procedure B
9 Production\/quality control procedure on an unfired shell: procedure C <\/td>\n<\/tr>\n
14<\/td>\n10 Calculation of results <\/td>\n<\/tr>\n
15<\/td>\n11 Test report <\/td>\n<\/tr>\n
16<\/td>\nAnnex A (informative) Alternative calculation methods
Annex B (informative) Convention for tabular presentation of results
Table B.1 – Temperature ramp phase <\/td>\n<\/tr>\n
17<\/td>\nTable B.2 – Temperature dwell phase at 1 200 \u00b0C
Annex C (informative) Convention of graphical presentation <\/td>\n<\/tr>\n
18<\/td>\nFigure C.1 – Example of graphical presentation <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Methods of testing refractory materials. Investment casting shell mould systems – Determination of permeability and standard air flow capacity at elevated temperatures – Section 10.2: Determination of permeability and standard air flow capacity at elevated temperatures<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2003<\/td>\n20<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":317420,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-317415","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/317415","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/317420"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=317415"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=317415"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=317415"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}